Thematische Bibliographien / Digital laser

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Auswahl der wissenschaftlichen Literatur zum Thema „Digital laser“

Autor: Grafiati

Veröffentlicht am 12. April 2025

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Zeitschriftenartikel zum Thema "Digital laser"

Guang Zheng, B. Wang, T. Fang, H. Cheng, Y. Qi, Y. W. Wang, B. X. Yan et al. „Laser Digital Cinema Projector“. Journal of Display Technology 4, Nr. 3 (September 2008): 314–18. http://dx.doi.org/10.1109/jdt.2008.924163.

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Shimura, Mikihiko, Koichi Imanaka, Hiroshi Sekii, Akira Fujimoto und Takeshi Takagi. „Semiconductor laser digital scanner“. Optical Engineering 29, Nr. 3 (1990): 230. http://dx.doi.org/10.1117/12.55582.

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Ichioka, Y., T. Kobayashi, H. Kitagawa und T. Suzuki. „Digital scanning laser microscope“. Applied Optics 24, Nr. 5 (01.03.1985): 691. http://dx.doi.org/10.1364/ao.24.000691.

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Piqué, Alberto, Heungsoo Kim, Ray Auyeung, Jiwen Wang, Andrew Birnbaum und Scott Mathews. „Laser-Based Digital Microfabrication“. NIP & Digital Fabrication Conference 25, Nr. 1 (01.01.2009): 394–97. http://dx.doi.org/10.2352/issn.2169-4451.2009.25.1.art00108_1.

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Li, Qingfeng, David Grojo, Anne-Patricia Alloncle, Boris Chichkov und Philippe Delaporte. „Digital laser micro- and nanoprinting“. Nanophotonics 8, Nr. 1 (16.10.2018): 27–44. http://dx.doi.org/10.1515/nanoph-2018-0103.

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AbstractLaser direct writing is a well-established ablation technology for high-resolution patterning of surfaces, and since the development of additive manufacturing, laser processes have also appeared very attractive for the digital fabrication of three-dimensional (3D) objects at the macro-scale, from few millimeters to meters. On the other hand, laser-induced forward transfer (LIFT) has demonstrated its ability to print a wide range of materials and to build functional micro-devices. For many years, the minimum size of laser-printed pixels was few tens of micrometers and is usually organized in two dimensions. Recently, new approaches have been investigated, and the potential of LIFT technology for printing 2D and 3D sub-micrometer structures has become real. After a brief description of the LIFT process, this review presents the pros and cons of the different digital laser printing technologies in the aim of the additive nanomanufacturing application. The transfer of micro- and nano-dots in the liquid phase from a solid donor film appears to be the most promising approach to reach the goal of 3D nanofabrication, and the latest achievements obtained with this method are presented and discussed.

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Huang, Cing-Yi, Kuo-Chih Chang und Shu-Chun Chu. „Experimental Investigation of Generating Laser Beams of on-Demand Lateral Field Distribution from Digital Lasers“. Materials 12, Nr. 14 (10.07.2019): 2226. http://dx.doi.org/10.3390/ma12142226.

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A new type of laser system, known as a digital laser, was proposed in 2013. Many well-known laser beams with known analytical forms have been successfully generated in digital lasers. However, for a light field that does not have an analytical form, such as a multi-point light field or a light field with an arbitrary lateral distribution, how to generate such a light field from a digital laser has not been explored. The goal of this study was to experimentally explore how to generate an on-demand lateral laser field in a digital laser. In this study, a multi-point Gaussian laser beam was successfully generated in a digital laser by both controlling the range of the laser gain and the modulation of the phase boundary of the end of the cavity. This study then generated laser beams with an on-demand lateral field distribution by generating a superimposed multi-point laser field in a digital laser. Examples of triangles, rectangles, and letter T-shaped light fields produced by digital lasers were experimentally demonstrated. In summary, this study experimentally showed that a laser beam with an on-demand lateral field distribution could be generated in a digital laser by generating a superimposed multi-point laser field in a digital laser, in which a laser gain region covering the entire intra-cavity multi-point light field and the projected SLM (spatial light modulator) modulation function adopting a mimic amplitude mask are both used.

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Plesch, A., U. Klingbeil und J. Bille. „Digital laser scanning fundus camera“. Applied Optics 26, Nr. 8 (15.04.1987): 1480. http://dx.doi.org/10.1364/ao.26.001480.

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Ngcobo, Sandile, Igor Litvin, Liesl Burger und Andrew Forbes. „Demonstrating a Rewritable Digital Laser“. Optics and Photonics News 24, Nr. 12 (01.12.2013): 28. http://dx.doi.org/10.1364/opn.24.12.000028.

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Lang, Marion, Rudolf Neuhaus und Jürgen Stuhler. „Digital Revolution in Laser Control“. Optik & Photonik 10, Nr. 1 (Februar 2015): 38–41. http://dx.doi.org/10.1002/opph.201500005.

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Kowalik, John, John J. Rosinski und Bradford R. Siepman. „Digital business telephones-project laser“. Bell Labs Technical Journal 3, Nr. 1 (14.08.2002): 122–33. http://dx.doi.org/10.1002/bltj.2097.

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Dissertationen zum Thema "Digital laser"

Crossingham, Grant James. „A digital laser slopemeter“. Thesis, University of Southampton, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.481690.

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Ranély-Vergé-Dépré, Claude-Alban. „Digital laser and Coherent Beam combination“. Electronic Thesis or Diss., Institut polytechnique de Paris, 2024. http://www.theses.fr/2024IPPAX131.

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La combinaison cohérente de lasers (CBC) est une approche architecturale innovante permettant la conception de sources laser efficaces associant puissances moyennes et crêtes élevées (kW/GW) tout en offrant une grande liberté quant à la mise en forme spatiale du faisceau résultant.Les amplificateurs à fibre dopée Ytterbium (Yb) permettent une très bonne gestion thermique grâce au rapport surface/volume élevé de la fibre (facilitant le refroidissement) et au rendement élevé rendu possible par les grandes longueurs d’interaction accessibles et le faible défaut quantique du dopant Yb. De plus, ces fibres présentent une largeur spectrale de gain supportant des durées d’impulsion allant jusqu’à quelques centaines de femtosecondes.Il est ainsi possible d’amplifier des trains d’impulsions femtosecondes à fort taux de répétition.Les deux prototypes étudiés dans cette thèse utilisent l’association de cette brique technologique avec l’architecture CBC. Le premier repose sur une pupille composite de 61 faisceaux juxtaposés offrant des caractéristiques de contrôle individuel de ses canaux et ayant permis d’introduire le concept de laser digital. Sa durée d’impulsion est réduite par une technique dite de “post-compression” non-linéaire permettant de conserver néanmoins ses propriétés digitales. Le second prototype à superposition de 7 pupilles est étudiée et développé pour son efficacité théorique plus importante
Coherent Beam Combining (CBC) is an innovative architectural approach to designing efficient laser sources combining high average power and high peak power (kW/GW), while offering great flexibility in the spatial shaping of the resulting beam. Ytterbium (Yb)-doped fiber amplifiers offer excellent thermal management thanks to the fiber's high surface-to-volume ratio (facilitating cooling) and high efficiency made possible by the long interaction lengths accessible and the low quantum defect of the Yb dopant. Moreover, these fibers feature a gain spectral width that supports pulse durations of down to a few hundred femtoseconds. This makes it possible to amplify femtosecond pulse trains at high repetition rates. The two prototypes studied in this thesis use the combination of this technology with CBC architecture. The first is based on a composite pupil with 61 tiled beams, offering individual control of its channels and introducing the concept of digital laser. Its pulse duration is reduced by a non-linear "post-compression" technique, enabling it to retain its digital properties. The second prototype, with its superposition of 7 pupils, is being studied and developed for its greater theoretical efficiency

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Mosayebi, Mahshad. „Digital Laser Speckle Image Correlation“. OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2131.

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This thesis examines the feasibility of combining Digital Image Correlation (DIC) with laser speckle based methods to form a new hybrid deformation measurement method called Digital Laser Speckle Image Correlation (DilSIC). Consequently, this method does not require any sample preparation and allows for the measurement of displacement of micro structures in addition to large displacements. In this technique, a coherent 30mW-632nm laser beam is expanded with 40X lens and then illuminated on the target surface to produce a fine, homogenous laser speckle pattern. Images were captured before and after deformation due to external load and the whole field displacement and strain were determined by the DIC method. This technique could measure displacement less than 30-μm with high accuracy when a 120mm × 80mm area of the surface was inspected. Up to 10% strain was measured by this technique with high accuracy during the whole range. Eventually the sub-surface crack was located successfully, which is a revolutionary achievement in NDT optical methods. This method was tested in different material, with different roughness. Aluminum sheet and rubber material were used mostly. This method could broaden the capability of displacement measurement and subsurface crack detection in wide range of materials.

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Heath, Daniel. „Digital micromirror devices and femtosecond laser pulses for rapid laser micromachining“. Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/417275/.

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Laser machining techniques are almost ubiquitous in industry for micro- to nanoscale fabrication. It is essential for the advancement of the field that faster, cheaper processes be developed. Enhancements in speed and fidelity of production can be made to both additive and subtractive writing techniques by using Digital Micromirror Devices (DMD), particularly when coupled with femtosecond laser pulses. The objective of this thesis is the demonstration of DMDs used in conjunction with ultrafast laser pulses for both novel and rapid machining applications; primarily image-projection based techniques, using DMDs as dynamic intensity masks, will be used for subtractive patterning, laserinduced transfer, multi-photon polymerisation and centimetre-scale micro-machining. The dynamic nature of the DMD enables its application to the field of multiple exposures, and the centimetre-scale machining is applied to functional biological assays. Adaptive mask techniques are used to enhance the image reproduction achieved, correct for positional errors introduced by translation stages, as well as to attain greyscale intensity control with a DMD in single ultrashort pulses. A new technique for producing digital holograms is developed, and will form the basis of future work. Image projection-based patterning using DMDs as dynamic intensity masks is shown via ablation, multiphoton polymerisation and Laser-Induced Transfer (LIT). Ablation was achieved in a range of materials (including, but not limited to: gold, graphite, diamond, bismuth telluride and antimony telluride, glass, nickel, glucose, and gelatin), with 2 micron resolutions in samples and overall sizes of 1cm2. A multiple exposure technique reduced final structure resolution by 2.7 compared to the diffraction limit possible in a single exposure – from 1m to 370nm on one experimental setup, and from 727nm to 270nm on a second setup. The first demonstration of shaped, solid-phase LIT deposits has been made, both in forward and backward directions of transfer. Adaptive optics techniques have been developed for DMD mask corrections, and have reduced the positional error of samples introduced by translation stages. Greyscale intensity patterns have been projected at samples using the strictly binary-style DMD display technology, and the loss of intensity in high spatial frequencies at the sample has been addressed. A novel method for the generation of binary holograms is introduced, which allows for several additional degrees of control over spatial intensity patterns when using DMDs, such as the effective mask position relative to imaging optics, greyscale control, the formation of images at multiple planes, phase control, and overall lateral shifts of the intensity distribution below a single DMD pixel width.

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Newberry, Shawn. „Laser Speckle Patterns with Digital Image Correlation“. OpenSIUC, 2021. https://opensiuc.lib.siu.edu/theses/2885.

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Digital Laser Speckle Image Correlation (DiLSIC) is a technique that utilizes a laser generated speckle pattern with Digital Image Correlation (DIC). This technology eliminates the need to apply an artifact speckle pattern to the surface of the material of interest, and produces a finer speckle pattern resulting in a more sensitive analysis. This investigation explores the parameters effecting laser speckle patterns for DIC and studies DiLSIC as a tool to measure surface strain and detect subsurface defects on pressure vessels. In this study a 632.8 nm 30 mW neon-helium laser generated the speckle pattern by passing through the objective end of an objective lens. All experiments took place in a lab setting on a high performance laminar flow stabilizer optical table.This investigation began with a deeper look at the camera settings that effect the effectiveness of using laser speckles with DIC. The first studies were concentrated on the aperture size (f-stop), shutter speed, and gain (ISO) of the camera. Through a series of zero-correlation studies, translation tests, and settings studies, it was discovered that, much like white light DIC, an increased gain allowed for more noise and less reliable measurements when using DiLSIC. It was shown that the aperture size and shutter speed will largely depend on the surface composition of the material, and that these factors should be investigated with each new sample of different surface finish.To determine the feasibility of using DiLSIC on pressure vessels two samples were acquired. The first was a standard ASTM filament wound composite pressure vessel (CPV) which had an upper load limit of 40 psi. The second was a plastic vessel that had internal subsurface defects added with the use of an air pencil grinder. Both vessels were put under a pressure load with the use of a modified air compressor that allowed for multiple loading cycles through the use of a pressure relief valve. The CPV was mapped out in 10-degree increments between the 90° and 180° markings that were on the pressure vessel, occurring in three areas, each one inch apart. The CPV had a pressure load applied to at 10, 20, 30,and 40 psi. DiLSIC was able to measure increasing displacement with increased loading on the surface of the CPV, however with a load limit of 40 psi no strains were detected. The plastic vessel had known subsurface defects, and these areas were the focus of the investigation. The plastic vessel was loaded with a pressure load at 5, 10, 12, 15, 17, and 20 psi. The 5 psi loaded image was used as a reference image for the correlation and decorrelation consistently occurred at 20 psi. This investigation proved that DiLSIC can detect and locate subsurface defects through strain measurement. The results were verified with traditional white light DIC, which also showed that the subsurface defects on pressure vessels were detectable. The DIC and DiLSIC results did not agree on maximum strain measurement, with the DiLSIC prediciting much larger strains than traditional DIC. This is due to the larger effect out-of-plane displacement has on DiLSIC. DiLSIC was able to detect subsurface defects on a pressure vessel. The median measured hoop strain was in agreement for DiLSIC, DIC and the predicted hoop strain for a wall thickness of 0.1 inches. However, DiLSIC also produced unreliable maximum strain measurements. This technique shows potential for future applications, but more investigations will be needed to implement it for industrial use. A full investigation into the parameters surrounding this technique, and the factors that contribute the most to added noise and unreliability should be conducted. This technology is being developed by multiple entities and shows promising results, and once further advanced could be a useful tool for rapid surface strain measurement and subsurface defect detection in nondestructive evaluation applications. Therefore, it is recommended to continue further investigations into this technology and its applications.

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Amer, Eynas. „Pulsed laser ablation studied using digital holography“. Doctoral thesis, Luleå tekniska universitet, Strömningslära och experimentell mekanik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18194.

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Pulsed digital holographic interferometry has been used to study the plume and the shock wave generated in the laser ablation process on different targets under atmospheric air pressure. A pulsed Nd-YAG laser system (pulse duration 12 ns) has been used both for ablating the material (wavelength 1064 nm) and for measurement (wavelength 532 nm). Digital holograms were recorded for different time delays using collimated laser light passed through the volume along the target. Numerical data of the integrated refractive index field were calculated and presented as phase maps. The Radon inversion has been used to estimate the 3D refractive index fields measured from the projections assuming rotational symmetry. Intensity maps have been calculated from the recorded digital holograms and used to calculate the attenuation of the probing laser beam by the ablated plume. Qualitative and quantitative information have been extracted from both the phase map and the intensity map to help describing the laser ablation process. Also 3D information about the induced plume has been obtained by numerical reconstruction of the digital holograms at different planes along the plume. The amount of released energy due to laser impact on a PCBM target has been estimated using the point explosion model. The released energy is normalized by the incident laser pulse energy and the energy conversion efficiency between the laser pulse and the target has been calculated and it seems to be constant around 80 %. The 3D refractive index fields have been used to calculate the shock wave front density and the electron number density distribution within the induced plasma. The electron number densities are found to be in the order of 1018 cm-3 and decay at a rate of 3x1015 electrons/cm3ns. The effect of the laser spot diameter on the shock wave generated in the ablation process of a Zn target has been studied. The induced shock wave has an ellipsoidal shape that approaches a sphere for decreasing spot diameter. A model was developed that approaches the density distribution that facilitates the derivation of the particle velocity field. The method provides quantitative results that are discussed; in particular a comparison with the point explosion theory. The effect of the physical properties of the target on the laser ablation process has been studied. The comparison of the laser ablation of Zn and Ti shows that different laser ablation mechanisms are observed for the same laser settings and surrounding gas. At a laser fluence of 5 J/cm2, phase explosion appears to be the ablation mechanism in case of Zn, while for Ti normal vaporisation seems to be the dominant mechanism. The results show that pulsed digital holographic interferometry is a promising technique to give a physical picture and increase the understanding of the laser ablation process in a time resolved manner.
Godkänd; 2009; 20091018 (eyname); DISPUTATION Ämnesområde: Experimentell mekanik/Experimental Mechanics Opponent: Reader in Laser Engineering Bill O’Neill, University of Cambridge, UK Ordförande: Professor Mikael Sjödahl, Luleå tekniska universitet Tid: Fredag den 20 november 2009, kl 10.00 Plats: E 231, Luleå tekniska universitet

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Cronin, Christopher Joseph. „Digital frequency demodulation for a laser vibrometer“. Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-11102009-020344/.

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Amer, Mohamed Eynas. „Pulsed laser ablation studied using digital holography /“. Luleå : Department of Applied Physics and Mechanical Engineering, Luleå University of Technology, 2009. http://pure.ltu.se/ws/fbspretrieve/3315450.

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Larsson, Ola. „Digital Implementation of a Laser Doppler Perfusion Monitor“. Thesis, Linköping University, Department of Electrical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-7091.

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Under 20 års tid har Perimed AB utvecklat och tillverkat LDPM- och LDPI-instrument som är baserade på en analog filterkonstruktion. De analoga komponenterna i konstruktionen är komplexa och icke-linjära med hänsyn till frekvens och de driver även med temperaturen. Funktionen hos konstruktionen beror också kraftigt av att de analoga komponenterna trimmas in under produktionen.

Det här examensarbetet syftar till att ta fram en alternativ design baserad kring en digital signal processor. Den digitala signalbehandlingsmetod som beskrivs baseras på väl förankrade laser-Doppler perfusionsteorier. Den implementerade signalbehandlingsalgoritmen beräknar perfusionen ur en samplad fotodetektorström, som har filtrerats till AC- och DC-komponenter med hjälp av ett analogt detektorkort. Algoritmen producerar en råperfusionssignal genom att beräkna en frekvensviktad summa av fotodetektorströmmens effektspektrum. Kompensation för detektorns brus och normalisering med ljusintensitet har också implementerats.

Den presenterade implementationen har verifierats mot ett exemplar av LDPM-enheten PF 5010 som har använts som referensinstrument vid alla mätningar. Mätningar in vitro har påvisat liknande mätresultat som referensinstrumentet för en referensvätska med hög perfusion och även för ett statiskt mätobjekt. Vidare har implementationen verifierats med mätningar in vivo på hud, vilket har påvisat nära nog identiska signalnivåer och gensvar på värmeprovokationer som referensinstrumentet.

Den demonstrerade uppfinningen förenklar tillverkningen av instrumenten eftersom antalet komponenter reduceras avsevärt och därmed antalet produktionstester. Användandet av en DSP reducerar dessutom instrumentets temperaturkänslighet eftersom den ersätter flera temperaturkänsliga komponenter.

For 20 years Perimed AB have been developing and manufacturing LDPM and LDPI instruments based on an analog filter construction. The analog components in the construction are complex and suffer from non-linear frequency dependency and temperature drifts. The functionality of the design is also heavily depending on analog components which need to be trimmed in the production.

In this thesis, an alternative design employing a digital signal processor is presented. The signal processing method used is based on well established laser Doppler perfusion theories. The implemented signal processing algorithm calculates the perfusion from a sampled photodetector current, pre-filtered into AC and DC components by an analog detector card. The algorithm produces a raw perfusion signal by calculating a frequency weighted sum of the power spectral density, PSD, of the photocurrent. Detector noise compensation and light intensity normalization of the signal has also been implemented.

The presented digital implementation has been verified using the PF 5010 LDPM unit as a reference. In vitro measurements have shown similar behaviour as the reference in a highly perfused reference fluid as well as for a static scatterer. Furthermore, the DSP implementation has been verified on in vivo measurements of skin, showing nearly identical signal levels and response to heat provocation as the reference.

The demonstrated invention improves the manufacturability of the instruments since it reduces the number of electronic components significantly and thus, the amount of manufacturing tests. The DSP also reduces the temperature sensitivity of the instrument since it replaces several analog components sensitive to temperature changes.

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Erk, Patrick P. (Patrick Peter). „Digital signal processing techniques for laser-doppler anemometry“. Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/43026.

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Bücher zum Thema "Digital laser"

S, Dongare A., und Bhabha Atomic Research Centre, Hrsg. Digital beam profiler for infrared lasers. Mumbai: Bhabha Atomic Research Centre, 2003.

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Blutinger, Jonathan David. Digital Cuisine: Food Printing and Laser Cooking. [New York, N.Y.?]: [publisher not identified], 2022.

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Hunter, David Mackenzie. Digital radiography by laser scanned readout of amorphous selenium. Ottawa: National Library of Canada, 1996.

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Montes, Felix G. Digital data acquisition for laser radar for vibration analysis. Monterey, Calif: Naval Postgraduate School, 1998.

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Bowen, M. F. Ultimate ocean depth packaging for a digital ring laser gyroscope. Woods Hole, Mass: Woods Hole Oceanographic Institution, 1998.

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F, Marshall Gerald, Hrsg. Handbook of optical and laser scanning. New York: Marcel Dekker, 2004.

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Gauthier, V. Application of PIDV to complex flows: Velocity field measurements in the front of a heavy gas cloud. Rhode Saint Genese, Belgium: Von Karman Institute for Fluid Dynamics, 1988.

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Shi Weiming yan jiu shi. Mac ying yin da hang: Xia zai, bo fang, fen xiang, dui kao DVD, zhuan dang. Taibei Shi: Qi biao chu ban gu fen you xian gong si, 2008.

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Chambers, Mark L. Hewlett-Packard official recordable CD handbook. Foster City, CA: IDG Books Worldwide, 2000.

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Wei-Jei, Yang, Yamamoto Fujio, Mayinger F. 1931-, American Society of Mechanical Engineers. Fluids Engineering Division. und ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition (1995 : Hilton Head, S.C.), Hrsg. Flow visualization and image processing of multiphase systems: Presented at the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition, August 13-18, 1995, Hilton Head, South Carolina. New York: American Society of Mechanical Engineers, 1995.

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Buchteile zum Thema "Digital laser"

Rinkevichyus, B. S., O. A. Evtikhieva und I. L. Raskovskaya. „Digital Refractogram Recording and Processing“. In Laser Refractography, 135–67. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-7397-9_7.

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Piqué, Alberto. „Laser Transfer Techniques for Digital Microfabrication“. In Laser Precision Microfabrication, 259–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10523-4_11.

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Breda, Alberto, Salvatore Micali, Angelo Territo, Mino Rizzo, Giulio Bevilacqua, Iacopo Meneghetti, Maria Chiara Sighinolfi, Bernardo Rocco und Giampaolo Bianchi. „Confocal Laser Endomicroscopy“. In Urologic Surgery in the Digital Era, 187–202. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63948-8_11.

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Brettel, Hans. „Pseudocolour Displays in Digital Image Processing“. In Laser/Optoelektronik in der Technik / Laser/Optoelectronics in Engineering, 349–53. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-48372-1_73.

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Tooley, F. A. P. „Digital Logic Elements for Optical Computing“. In Laser Science and Technology, 403–22. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4757-0378-8_25.

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Schlüter, P. „Positional Correction During Laser Cutting by Means of Digital Image Processing“. In Laser in der Technik / Laser in Engineering, 234–37. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84736-3_40.

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Hutzler, P. J. S., S. Berber und W. Waidelich. „An Interactive System for Digital Optical Image Processing“. In Laser/Optoelektronik in der Technik / Laser/Optoelectronics in Engineering, 218–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82638-2_43.

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Hutzler, P. „Opto-Electronic Sensor Systems for Digital Image Processing“. In Laser/Optoelektronik in der Technik / Laser/Optoelectronics in Engineering, 106–16. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-83174-4_26.

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Pedrini, G., Y. Zou und H. J. Tiziani. „Speckle- and Digital Holographic Interferometry (A Comparison)“. In Laser in Forschung und Technik / Laser in Research and Engineering, 485–88. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80263-8_104.

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Li, Xiaojie, Bao-zhen Ge, Dan Zhao, Qing-guo Tian und K. David Young. „Auto-calibration of a Laser 3D Color Digitization System“. In Digital Human Modeling, 691–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02809-0_73.

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Konferenzberichte zum Thema "Digital laser"

Tani, Shuntaro. „Digital Twins for Laser Microprocessing Based on Large-Scale Experimental Data“. In Laser Applications Conference, LM1B.3. Washington, D.C.: Optica Publishing Group, 2024. https://doi.org/10.1364/lac.2024.lm1b.3.

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Digital twins, computational replicas of the physical world, are set to replace time-consuming trial-and-error methods for optimizing various parameters. In this talk, we will explain how to build digital twins for laser-based material processing. Full-text article not available; see video presentation

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Sementin, V. V., A. P. Pogoda und A. S. Boreysho. „Filtering methods for reconstructed digital holograms“. In 2024 International Conference Laser Optics (ICLO), 240. IEEE, 2024. http://dx.doi.org/10.1109/iclo59702.2024.10624570.

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Soman, Pranav. „Addressing key challenges in multimaterial and multiscale digital projection stereolithography“. In Laser 3D Manufacturing XII, herausgegeben von Henry Helvajian, Bo Gu und Hongqiang Chen, 11. SPIE, 2025. https://doi.org/10.1117/12.3040820.

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Petrov, V. M., D. V. Masygin, A. A. Sevryugin, E. V. Shalymov, E. K. Iurieva, D. V. Venediktov und V. Yu Venediktov. „Holographic Interferometers for Optical Digital Medical Tomography“. In 2024 International Conference Laser Optics (ICLO), 176. IEEE, 2024. http://dx.doi.org/10.1109/iclo59702.2024.10624127.

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Numazawa, Keisuke, Kota Kumagai und Yoshio Hayasaki. „Volumetric micro clouds drawn with femtosecond laser pulses“. In Digital Holography and Three-Dimensional Imaging, W5B.4. Washington, D.C.: Optica Publishing Group, 2024. http://dx.doi.org/10.1364/dh.2024.w5b.4.

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Du, Qiu-shuang, Wan-cheng Liu, Yu-hai Li, Song Guan und Yi-ning Yang. „A high dynamic range imaging method based on the digital micromirror device“. In Laser Technology and Applications, herausgegeben von Pu Zhou, 48. SPIE, 2024. https://doi.org/10.1117/12.3047822.

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Stevens, Rock, Josiah Dykstra, Wendy Knox Everette und Michelle L. Mazurek. „How to Hack Compliance: Using Lessons Learned to Repeatably Audit Compliance Programs for Digital Security Concerns“. In Learning from Authoritative Security Experiment Results. Reston, VA: Internet Society, 2020. http://dx.doi.org/10.14722/laser.2020.23003.

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Takeuchi, Eric B., Graham W. Flint, Robert Bergstedt, Paul J. Solone, Dicky Lee und Peter F. Moulton. „Laser Digital Cinema“. In Photonics West 2001 - Electronic Imaging, herausgegeben von Ming H. Wu. SPIE, 2001. http://dx.doi.org/10.1117/12.420785.

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Smeu, Emil, Niculae N. Puscas und Ion M. Popescu. „Digital laser powermeter“. In ROMOPTO '97: Fifth Conference on Optics, herausgegeben von Valentin I. Vlad und Dan C. Dumitras. SPIE, 1998. http://dx.doi.org/10.1117/12.312715.

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Aptowicz, Kevin B., Ahmed M. Alsayed, Yilong L. Han und Arjun G. Yodh. „Optical Artifacts in Digital Video Microscopy“. In Laser Science. Washington, D.C.: OSA, 2006. http://dx.doi.org/10.1364/ls.2006.lmh4.

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Berichte der Organisationen zum Thema "Digital laser"

Shamey, Renzo, Traci A. M. Lamar und Uikyung Jung. Digital Textile Printing with Laser Engraving: Surface Contour Modification and Color Properties. Ames (Iowa): Iowa State University. Library, Januar 2019. http://dx.doi.org/10.31274/itaa.9459.

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Komerath, N. M., O. D. Wong und R. Mahalingam. Tunable Solid-State Laser and High Resolution Digital Cameras for Lagrangian Vortex Imaging. Fort Belvoir, VA: Defense Technical Information Center, Dezember 2000. http://dx.doi.org/10.21236/ada391255.

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Miles, Richard B. Development of Pulse-Burst Laser Source and Digital Image Processing for Measurements of High-Speed, Time-Evolving Flow. Fort Belvoir, VA: Defense Technical Information Center, August 2000. http://dx.doi.org/10.21236/ada381328.

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Miles, Richard B. AASERT: Development of Pulse-Burst Laser Source and Digital Image Processing for Measurements of High-Speed, Time-Evolving Flow. Fort Belvoir, VA: Defense Technical Information Center, August 2000. http://dx.doi.org/10.21236/ada383154.

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Randell. L51857 Evaluation of Digital Image Acquisition and Processing Technologies for Ground Movement Monitoring. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), Januar 2008. http://dx.doi.org/10.55274/r0011244.

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Ground movement may occur due to landslides, seismic activity, adjacent earth works, thaw settlement of permafrost, frost heave, or a variety of other causes. When soil moves relative to a pipeline, loads are imposed on the pipeline that will tend to stress it. Portions of the pipeline are anchored or loaded by the moving soil mass, while adjacent portions are anchored in the intact soil and tend to restrain the pipeline. These soil movements and restraints set up stresses within the pipeline that, depending upon the magnitude of the stresses and the nature of the pipeline, may cause damage or failure of the line. The objectives of this project were to evaluate and, where appropriate, enhance the ability of satellite-based interferometric synthetic aperture radar (InSAR) and airborne laser range-finding to delineate and monitor slope movements along pipeline right-of-ways. Particular emphasis was placed on operational issues, and especially the problems associated with applying these technologies in areas where natural vegetation precludes a straightforward analysis.

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Kubica, Stefan, Tobias Peuschke-Bischof, Belinda Müller und Robin Avci. Fahrmanöver für Geradeausfahrt. Technische Hochschule Wildau, 2019. http://dx.doi.org/10.15771/1264.

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This repository contains various short driving scenarios of our vehicle fleet in 1:14 scale. These are part of our digital learning factory "Wildauer Maschinen Werke" (www.th-wildau.de/wmw) and are used for the development of autonomous driving functions. The data is recorded in the form of Rosbags in the underlying robotic operating system (www.ros.org) and can be played in their own ROS server instances, whereby the recorded journeys of the vehicles can be simulated and used for their own developments. The scenarios contain short driving scenarios with so-called ROS topics. This includes engine and steering control and frontal distance measurements of an ultrasonic sensor. Videos are also provided for each scenario for a better overview. It is the 1st generation. Towards the end of 2020, data sets will follow that additionally contain camera data, GPS coordinates and speed as well as laser scanner data.

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León, Carlos. Digital Operational Resilience Act (DORA). FNA, Juli 2023. http://dx.doi.org/10.69701/deff9232.

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One of the key lessons of the 2007-2008 global financial crisis is the importance of financial market infrastructures (FMIs) as a pillar of financial stability. Before, the role of financial market infrastructures, namely the provision of trading, clearing, settling, recording, and compressing services for transactions between financial institutions (FIs) was often taken for granted. This was reflected in FMIs having often been referred to as the financial system’s plumbing, including by the Federal Reserve’s 14th chairman (Bernanke, 2011)—a clear reference to the critical yet concealed importance of FMIs in the safe and efficient functioning of financial markets. Today, it is clear that the failure of an important FMI will almost certainly lead to systemic instability in financial markets. Given this, it is evident that FMIs are critical infrastructures; that is, based on a definition by the European Commission (2008), FMIs can be considered systems that are essential for the maintenance of vital societal functions, health, safety, security, economic or social well-being of people. In light of this importance, it’s perhaps surprising that the literature about financial networks has addressed the importance of FMIs rather recently and sparingly. The archetypical financial network, composed of FIs as elements (the nodes) that are interlinked through different types of relations (e.g., exposures, payments, ownership, common holdings), has been complemented by the introduction of FMIs as an additional layer that provides a medium for FIs to interact. As highlighted in Berndsen, et al. (2018), a network of FIs that does not include FMIs is a logical network—one that displays bilateral relations despite those requiring the intervention of an FMI to exist. And that’s why the plumbing reference is particularly illustrative: when looking at the floor plan of a house, the plumbing is a critical additional layer hidden beneath the first—immediately visible—layer; in a building, carelessly knocking down a wall could have a disastrous effect on the supply of water, electricity, gas, communications within the apartment and even to others above and below–not to mention the effect on the structural integrity of the building. However, there are further layers beneath those containing FIs and FMIs. In fact, a financial network composed of FIs and FMIs is still a logical network, as the connections between FIs and FMIs also require the intervention of other elements to exist. Those elements provide the physical connection that enables the interlinkages among FIs and FMIs, in the form of wired (e.g., cable) or wireless (e.g., radio waves) connections. That is, as stated by Berndsen, et al. (2018), the interdependence of financial markets with physical networks, such as power and communication networks, make those networks critical infrastructures and obvious candidates for examining the stability of financial systems from an operational perspective.

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Baral, Aniruddha, Jeffery Roesler und Junryu Fu. Early-age Properties of High-volume Fly Ash Concrete Mixes for Pavement: Volume 2. Illinois Center for Transportation, September 2021. http://dx.doi.org/10.36501/0197-9191/21-031.

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High-volume fly ash concrete (HVFAC) is more cost-efficient, sustainable, and durable than conventional concrete. This report presents a state-of-the-art review of HVFAC properties and different fly ash characterization methods. The main challenges identified for HVFAC for pavements are its early-age properties such as air entrainment, setting time, and strength gain, which are the focus of this research. Five fly ash sources in Illinois have been repeatedly characterized through x-ray diffraction, x-ray fluorescence, and laser diffraction over time. The fly ash oxide compositions from the same source but different quarterly samples were overall consistent with most variations observed in SO3 and MgO content. The minerals present in various fly ash sources were similar over multiple quarters, with the mineral content varying. The types of carbon present in the fly ash were also characterized through x-ray photoelectron spectroscopy, loss on ignition, and foam index tests. A new computer vision–based digital foam index test was developed to automatically capture and quantify a video of the foam layer for better operator and laboratory reliability. The heat of hydration and setting times of HVFAC mixes for different cement and fly ash sources as well as chemical admixtures were investigated using an isothermal calorimeter. Class C HVFAC mixes had a higher sulfate imbalance than Class F mixes. The addition of chemical admixtures (both PCE- and lignosulfonate-based) delayed the hydration, with the delay higher for the PCE-based admixture. Both micro- and nano-limestone replacement were successful in accelerating the setting times, with nano-limestone being more effective than micro-limestone. A field test section constructed of HVFAC showed the feasibility and importance of using the noncontact ultrasound device to measure the final setting time as well as determine the saw-cutting time. Moreover, field implementation of the maturity method based on wireless thermal sensors demonstrated its viability for early opening strength, and only a few sensors with pavement depth are needed to estimate the field maturity.

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Morneault, K., S. Rengasami, M. Kalla und G. Sidebottom. Integrated Services Digital Network (ISDN) Q.921-User Adaptation Layer. RFC Editor, Januar 2006. http://dx.doi.org/10.17487/rfc4233.

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Green, Malcolm. Diamond-Shaped Semiconductor Ring Lasers for Analog to Digital Photonic Converters. Fort Belvoir, VA: Defense Technical Information Center, Januar 2004. http://dx.doi.org/10.21236/ada421293.

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