Готові списки джерел за темами / Acousto-optic tunable filter

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Acousto-optic tunable filter"

Hueber, Dennis M., Christopher L. Stevenson, and Tuan Vo-Dinh. "Fast Scanning Synchronous Luminescence Spectrometer Based on Acousto-Optic Tunable Filters." Applied Spectroscopy 49, no. 11 (November 1995): 1624–31. http://dx.doi.org/10.1366/0003702953965830.

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A new luminescence spectrometer based on quartz-collinear acousto-optic tunable filters (AOTFs) and capable of synchronous scanning is described. An acousto-optic tunable filter is an electronically tunable optical bandpass filter. Unlike a tunable grating monochromator, an AOTF has no moving mechanical parts, and an AOTF can be tuned to any wavelength within its operating range in microseconds. These characteristics, combined with the small size of these devices, make AOTFs an important new alternative to conventional monochromators, especially for portable instrumentation. The relevant performance of the AOTFs (efficiency, bandwidth, rejection, etc.) is compared with that of typical small-grating monochromator.

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Steinbruegge, Kenneth B. "Infrared acousto‐optic tunable filter." Journal of the Acoustical Society of America 79, no. 2 (February 1986): 586. http://dx.doi.org/10.1121/1.393758.

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Bures, Kenneth J. "Acousto-optic tunable filter with segmented acousto-optic interaction region." Journal of the Acoustical Society of America 116, no. 3 (2004): 1317. http://dx.doi.org/10.1121/1.1809872.

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Gnewuch, H., N. K. Zayer, C. N. Pannell, G. W. Ross, and P. G. R. Smith. "Broadband monolithic acousto-optic tunable filter." Optics Letters 25, no. 5 (March 1, 2000): 305. http://dx.doi.org/10.1364/ol.25.000305.

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Yushkov, K. B., D. V. Bogomolov, and V. B. Voloshinov. "Acousto-optic imaging by means of wide angle tunable acousto-optic filter." Journal de Physique IV (Proceedings) 137 (November 2006): 185–88. http://dx.doi.org/10.1051/jp4:2006137038.

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Naumov, A. A. "Optical system of 3D AOTF-based microscopic imager." Journal of Physics: Conference Series 2127, no. 1 (November 1, 2021): 012038. http://dx.doi.org/10.1088/1742-6596/2127/1/012038.

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Abstract In this paper, we propose a novel approach of calculating optical stereoscopic systems containing acousto-optic tunable filters. Each channel is designed separately as a simple imaging system. It is formed by an entrance lens, a radiation receiver lens, and an acousto-optic filter. The optimization of the depth of field and the magnification of the optical system is carried out during the calculations. The numerical values of the overall parameters obtained satisfy the given initial requirements. The Zemax simulation of the built optical system is in strong agreement with the calculation.

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Han, Xiaofang, Yue Hu, Jiwei Li, Pengfa Chang, Feng Gao, Xiao Dong, Fang Bo, Wending Zhang, Guoquan Zhang, and Jingjun Xu. "All-Fiber Frequency Shifter Based on an Acousto-Optic Tunable Filter Cascaded with a Tapered Fiber-Coupled Microcavity." Crystals 11, no. 5 (May 1, 2021): 497. http://dx.doi.org/10.3390/cryst11050497.

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An all-fiber acousto-optic frequency shifter (AOFS) based on an acousto-optic tunable filter (AOTF) cascaded with a packaged tapered fiber (TF)-coupled microsphere was proposed and demonstrated in both theory and experiment. The configuration has the advantages of easy alignment, robustness, compact size, and low cost, which will improve its further application, such as in the optical heterodyne detection technique (OHDT).

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LI, HONG-YU, HENG-WEN LI, BAO-KUN HAN, and LE-NIAN XU. "A NEW METHOD TO ANALYZE ACOUSTO-OPTIC TUNABLE FILTER." Modern Physics Letters B 23, no. 29 (November 20, 2009): 3525–30. http://dx.doi.org/10.1142/s0217984909021582.

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A method based on the acoustics is developed to analyze the acousto-optic tunable filter (AOTF). A design of AOTF is provided to improve the performance of AOTF based on the method. And the experiment confirms the design.

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Burlakov, A. B., S. V. Shirokov, C. C. Huang, and D. D. Khokhlov. "K-means clustering of zebrafish embryos images acquired with AOTF-based hyperspectral microscope." Journal of Physics: Conference Series 2127, no. 1 (November 1, 2021): 012062. http://dx.doi.org/10.1088/1742-6596/2127/1/012062.

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Abstract Model organism studies are widely implemented in biomedical research fields. Zebrafish is a common and convenient model organism. To provide in vivo investigation of living zebrafish the non-invasive imaging methods are implemented. Hyperspectral imaging utilizing acousto-optic tunable filters is a perspective modality for zebrafish embryos and larvae automated observation. In this paper, the hyperspectral microscope based on the acousto-optical tunable filter is described. Using the hyperspectral image arrays obtained with the described setup, the K-means clustering algorithm is tested. The results obtained for different number of clusters are presented and discussed.

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Treado, Patrick J., Ira W. Levin, and E. Neil Lewis. "Near-IR imaging microscopy using an acousto-optic tunable filter (AOTF)." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (August 1992): 1532–33. http://dx.doi.org/10.1017/s0424820100132297.

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Near-infrared spectroscopy is a sensitive and non-invasive probe for chemical analyses. The integration of spectroscopic and imaging technologies is a potent tool for the study of a wide range of biological materials.Continuously tunable acousto-optic filters operable in the ultraviolet, visible and infrared are now widely available. These computer controlled notch filters provide random wavelength access, wide spectral coverage and moderate spectral resolution. AOTFs potentially have a wide range of spectroscopic applications. We employ AOTF technology for visible/NIR absorption microscopy between 600-2000 nm.The microscope is constructed around an acousto-optic device coupled to an infinity corrected microscope employing either silicon or indium antinomide focal-plane array detectors. In operation, the AOTF is used to spectrally filter a quartz halogen light source. Under computer control the AOTF is swept through a wavelength range and at predetermined intervals images are recorded. Hundreds of frames may be collected, and the spectral image data set can readily comprise many megabytes of data.

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Дисертації з теми "Acousto-optic tunable filter"

Ingvaldsen, Andre Tor Rikard. "An Imaging Spectrometer using an Acousto-Optic Tunable Filter." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18781.

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Spectroscopy is a powerful tool for analysis in a widerange of scientific and industrial fields. Spectroscopic measurements obtaininformation about the interaction between matter and radiated energy.This information may be utilized for detection and classification of objectsand substances. There is a wealth of different methods and technologiesdeveloped for different applications, from space- and air-borne remotesensing to medical sample analysis.In this report we present a spectral imaging system consisting of a digitalcamera with an acousto-optical tunable filter (AOTF) as the spectralband selective element. An evaluation of the properties of the imager ispresented, and we investigate the feasibility of real-time spectral imagingvideo based on this system. A comparison with other spectral imagingtechnologies is made. Custom application software for camera control andimage acquisition is presented. A special optical layout that minimizes theoptical aberrations produced by the diffraction process in the AOTF is alsopresented.The system produce a stack of monochrome images at different wavelength bandsforming an "image cube" containing a combinationof spatial an spectral information. The system uses the visible part ofthe electromagnetic spectrum to collect spectral information at every pointin an image plane. Our results show that the camera have good lightsensitivity and a high signal-to-noise ratio, but that the image throughputand spatial resolution is not optimal for a high image rate. The AOTFis a highly flexible device with random access to wavelength bands andselectable band-pass shape. But the many configurable parameters of thesystem also complicates usage. Many parameters need to be calibrated,and we present some methods on this. A major challenge in an spectralimaging system is to get enough light through to the sensor, and we findthat there is high loss of light caused by the diffraction process in the filter.It will be shown that the system is not suitable for real-time spectral videoimaging because of the low frame rate. Suggestions for improvements aregiven.

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Sturgeon, Melissa A. "Spectral and polarimetric analysis of hyperspectral data collected by an acousto-optic tunable filter system." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1993. http://handle.dtic.mil/100.2/ADA275076.

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Thesis (M.S. in Systems Technology (Space Operations) Naval Postgraduate School, September 1993.
Thesis advisor(s): Philip A. Durkee. "September 1993." Includes bibliographical references. Also available online.

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Champagne, Justine. "Filtres acousto-optiques accordables à sélection de polarisation pour l'imagerie hyperspectrale." Thesis, Valenciennes, Université Polytechnique Hauts-de-France, 2020. http://www.theses.fr/2020UPHF0033.

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L’imagerie hyperspectrale et de polarimétrie est un domaine en plein essor qui présente de nombreuses applications. Ce contexte pousse à améliorer sans cesse les filtres, notamment en termes de résolution spectrale. Il est utile par exemple d’augmenter le nombre de bandes spectrales et leurs finesses pour permettre une meilleure caractérisation des éléments de la scène observée. Dans ce contexte, nous présentons les possibilités offertes par l’interaction acousto-optique dans la paratellurite. Les filtres accordables acousto-optiques (AOTF) sont utilisés pour l’imagerie hyperspectrale et la polarimétrie pour leurs nombreux avantages : leur accord rapide et l’adressage arbitraires, leur robustesse, leur efficacité et leur bonne résolution spectrale. La biréfringence du matériau permet d’obtenir deux faisceaux diffractés ayant deux polarisations linéaires orthogonales en sortie, permettant une potentielle mesure polarimétrique. Dans le cadre de cette thèse portant sur les filtres acousto-optiques accordables à sélection de polarisation pour l’imagerie hyperspectrale, nous étudions plusieurs systèmes utilisant un filtre acousto-optique travaillant sur de larges bandes spectrales. Nous démontrons la capacité qu’offre un AOTF en tant qu’analyseur de polarisation linéaire à haut rendement de diffraction. Nous présentons une méthode d’apodisation du signal (avec amélioration de la résolution spectrale) en utilisant un AOTF mono-transducteur dans un système « double pass », permettant de garder plus de 90 % d’efficacité. Nous avons enfin réalisé les phases de conception, de caractérisation et de validation d’un AOTF original, multi-électrodes (5 électrodes) pour l’imagerie hyperspectrale et de polarimétrie permettant d’homogénéiser la bande passante (<10 nm) sur une large bande de fonctionnement [450 nm - 800 nm]
Hyperspectral and polarimetric imaging shows numerous applications and is rapidly developing. This context encourages continuous improvement of filters, particularly for the spectral resolution. For instance, it can be useful to increase the number of spectral bands and reduce the spectral bandwidth to improve the characterization of the observed elements in the scene. In this context, we present the different possibilities offered by the acoustooptic interaction in paratellurite. Acousto-Optic Tunable Filters (AOTF) are used for hyperspectral and polarimetric imaging because of their numerous advantages: their fast tuning and arbitrary addressing, robustness, efficiency, and good spectral resolution. The birefringence of the material makes it possible to obtain two diffracted beams with two orthogonal linear polarizations at the output, allowing a potential polarimetric measurement. As part of this thesis on acousto-optical tunable filters with polarization selection for hyperspectral imaging, we are studying several systems using an acousto-optical filter working on broad spectral bands. We demonstrate the ability of an AOTF as a high diffraction efficiency linear polarization analyzer. We present a method of apodisation of the signal (with improvement of the spectral resolution) by using a mono-transducer AOTF in a “double pass” system able to maintain more than 90% efficiency. We performed the design, characterization, and validation phases of an original, multi-electrode (5 electrodes) AOTF for hyperspectral and polarimetric imaging to homogenize the bandwidth (<10 nm) over a wide operating band [450 nm - 800 nm]

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Valle, Stafano. "Design and application of high performance Acousto-Optic Tunable Filters." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8323/.

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The design and application of high performance Acousto-Optic Tunable Filters (AOTFs) is the topic of this thesis. The most common material commercially used to build AOTFs is Tellurium Dioxide because of its extended wavelength range from 380 nm up 4.5 μm, a good acousto-optic figure of merit, and the availability in crystal of large di- mension with good optical quality. The performance of an AOTF can be summarized by passband versus wavelength, RF power to achieve peak diffraction efficiency and tuning range. One of the most relevant parameters which limits AOTF performance is the RF power versus diffraction efficiency, which increases with 2. A practical limi- tation has been imposed to 50mW /mm2 , above these level thermal gradient affects the performance. This level is easy reached for conventional AOTF for wavelength above 2.5 μm. The reduction of RF power requirement is achieved by means of acous- tic resonant cavities. The theoretical development and subsequent design of the first resonant AOTF developed inside Gooch and Housego is carried out, and the exper- imental results are in good agreement with the predicted performances. The results obtained from the experience with resonant AOTFs lead to extending the wavelength range from 180 nm up to 10 μm using different acousto-optic materials with limited performance with conventional configuration. Crystal quartz is investigated to extend the wavelength range down to 180 nm, this material is well known in acousto-optic applications. The resonant configuration is particularly suitable for this crystal since the advantage factor is particularly high thanks to the low acoustic attenuation. The experimental results show good agreement with the predicted performances, leading to a large aperture AOTF operating between 180 nm and 380 nm with RF power for peak diffraction efficiency below 8 W. This is the first time that a resonant imaging AOTF made of crystal quartz is reported in literature, to the best of the authors knowledge. Calomel single crystal is investigated to realise an AOTF operating between 4.5 μm and 10 μm. Due to its physical properties which are incompatible with conventional manufacturing processes, different challenges (such as bonding the ultrasonic trans- ducer) are solved by the author in order to build a high performance AOTF. Despite the preliminary results showing promise, the acousto-optic properties of the material are limiting the achievable performance, at least for acousto-optic tunable filters, a fact that does not seem to have been widely appreciated , and which cannot solved by just optimising the design. From the application point of view an optical spectrum analyser based on AOTF technology is investigated, where a dual polarization AOTF is developed in order to realize a spectrometer with a competitive price operating in the wavelength range between 2.5 μm and 4.5 μm. The effects of the acoustic attenuation on a large aperture AOTF is investigated theoretically and experimentally since the performance is affected in the UV range leading to non-ideal operating condition, and a solution is proposed to overcome this issue The results obtained will allow the design of high performance AOTFs in the industrial environment leading to a new types of devices with enhanced performance.

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Vaughan, Derek E. L. "Surface acoustic waves in optical communication devices : the development of tunable acousto-optic filters." Thesis, Bangor University, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.333618.

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Cheng-Ming, Wang, and 王正明. "The Linewidth Characteristics of an Apodized Acousto-Optic Tunable Filter." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/13658101818345316145.

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碩士
國立臺灣科技大學
電子工程技術研究所
86
The linewidth properties of an acousto-optic tunable filter for light with arbitrary polarization are studied. The input light which interacts colinearly or noncolinearly with sound inside an AOTF is assumed to be arbitrarily polarized. A set of coupled equations which can describe the interaction inside an AOTF are derived from the vector wave equation.The uniform coupling coefficient equations can not be applied to the apodized AOTF case for the codirectional Bragg interaction.We add the off-Bragg condition in the uniform coupling equations to account for apodized ones. The apodized equations can be applied to analyzing any AOTF.Finally, the numerical results of linewidth response for different conditions are presented .

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CHEN, RUI-YU, and 陳瑞育. "On-Line Polarization-Mode Dispersion MeasurementUsing an Acousto-Optic Tunable Filter." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/09445527823482055375.

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碩士
國立臺灣科技大學
電子工程系
93
Polarization-mode dispersion is one of the most critical problems for the high-speed wavelength-division-multiplexed system. For a given transmission path, the difference in propagation time experienced by the two polarization modes at a given wavelength is called the differential group delay(DGD) or first-order PMD. We can select the wavelength using the acousto-optic tunable filter and measure the frist-order PMD by the Fixed Analyzer Technique and the data modulation after transmission through a long single mode fiber which causes depolarization. We can determine the different group delay with the relationship between DOP and DGD. Thus, we may measure and compensation it in-time.

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Gambell, Adam James. "Investigation of Narrowband Acousto-Optic Tunable Filters for Semiconductor Laser Tuning." Thesis, 2019. http://hdl.handle.net/2440/122570.

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Wavelength tunable sources find applications in areas of laser surgery, optical coherence tomography, material processing, and differential absorption light detection and ranging. Acousto-optic tunable filters (AOTFs) are wavelength selective devices which allow for better stability than mechanical tuning due to their lack of mechanical movement. Agile tunability is achieved by avoiding inertial effects. The aim of this thesis was to investigate the performance and limitations of AOTF wavelength controlled external semiconductor laser cavities. The three key components of a typical tunable source are outlined. Conventional tuning mechanisms are compared with AOTFs, and different gain media discussed, with semiconductors being identified as suitable for building AOTF tuned sources. Initially, two diffraction grating tuned sources were constructed. The first was a Thulium doped fibre laser which produced >1.3 W over 1920 – 2060 nm wavelength range which has since been delivered to OzGrav for characterising the absorption of low hydroxide OH bulk fused silica. The second source was constructed from a superluminescent diode with an Indium Phosphide (InP) active layer and produced >5 mW over 1650 – 1750 nm. This source was subsequently used for characterising a frequency shifting, quasi-collinear AOTF for its tuning relation, response to different driving conditions, and temporal response. Two tunable laser cavities were built using the quasi-collinear AOTF. The first was based on the InP superluminescent diode and demonstrated >10 mW over 1615 – 1775 nm. However, the laser displayed significant etalon effects in its spectral output. This motivated the construction of a ring-cavity based on an InP semiconductor optical amplifier. This laser produced >5 mW over 1600 – 1750 nm, with ~0.3 nm linewidths and no etalon effects observed in the output. Sweep rates of 10⁵ nm/s were demonstrated for both lasers without significant spectral broadening or power modulation. This is of similar magnitude to the fastest previously reported quasi-collinear AOTF tuned semiconductor lasers. Wavelength agility was demonstrated by switching between any two wavelengths in the gain band within the 29 μs interaction time of the AOTF. Finally, a frequency compensating AOTF device was utilised in the ring-cavity to investigate the effect of frequency shift on laser performance. Operating with no frequency shift allowed for a reduction in linewidth, but made the laser more sensitive to residual etalon effects which had not previously been observed with the frequency shifting AOTF ring-cavity. A +30 kHz frequency shift was significant enough to disturb these intracavity interference effects while being small enough to reduce the linewidth from the 0.3 nm observed with the frequency shifting AOTF to <0.1 nm. Future directions of research are discussed. These include operation at other wavelengths, and investigating dual wavelength operation.
Thesis (MPhil) -- University of Adelaide, School of Physical Sciences, 2019

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Grassi, Elisa. "Frequency-modulation Stimulated Raman Scattering microscopy with an Acousto-Optic Tunable Filter." Thesis, 2021. http://hdl.handle.net/10754/668583.

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Stimulated Raman Scattering (SRS) is a Coherent Raman microscopy method that has been increasingly employed in recent years for highly-specific, label-free, and high-speed bioimaging. Compared to a similar Coherent Raman method, the so-called Coherent Anti-Stokes Scattering (CARS) microscopy, it exhibits advantages such as the absence of nonresonant background (NRB) and the linearity of the signal intensity on the concentration of molecules of interest. However, SRS can be affected by unwanted background signals that hinder the acquisition of an accurate Raman information. These unwanted signals are generated by parasitic effects that are difficult to suppress in standard SRS setups. Here, I present a frequency-modulation (FM) SRS technique via an Acousto-Optic Tunable ioilter (AOTF), describing its implementation on Vibra Lab setup and assessing its efficiency with imaging results. The FM technique provides a cancellation of the unwanted background signals, maintaining intact the SRS information. It is based on the weak spectral dependence of the parasitic effects as compared to the high spectral specificity of the SRS signal. The proposed scheme presents a few advantages when compared with other solutions presented in the literature. In particular, it doesn't require a complex setup configuration, and it can be used seamlessly in a very broad range of the vibrational spectrum.

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Mai, Yu-Chun, and 買昱鈞. "The Polarization-Mode Dispersion Mitigation Technique Using an Acousto-Optic Tunable Filter Approach." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/06971672680930133454.

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Анотація:

碩士
國立臺灣科技大學
電子工程系
93
Polarization-mode dispersion (PMD) is an obstacle in many fiber-optic transmission systems, and as the bit rates increase to 40Gb/s and beyond, its impact will be even more great. Consequently, there is a large interest in techniques to compensate or mitigate the effects of the PMD, and a number of methods have been proposed. Acousto-optic tunable filters (AOTF) are very attractive system components in wavelength division multiplexing (WDM) networks because of their broad continuous electronic wavelength tunability and narrow filter bandwidth. The unique multiwavelength filtering capability further adds a new dimension of flexibility to network design that cannot be achieved by any other kind of optical filter. An variable delay time of the AOTF can be generated when we changed the amplitude of acoustic wave. In this paper, we use AOTF to compensate the effects of the PMD. The proposed technique is verified by the computer simulation.

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Книги з теми "Acousto-optic tunable filter"

Sturgeon, Melissa A. Spectral and polarimetric analysis of hyperspectral data collected by an acousto-optic tunable filter system. Monterey, Calif: Naval Postgraduate School, 1993.

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Y, Choe Joon, Oh Tae K, and National Institute of Standards and Technology (U.S.), eds. High resolution grating-assisted acousto-optic tunable filter. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1998.

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High resolution grating-assisted acousto-optic tunable filter. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1998.

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High resolution grating-assisted acousto-optic tunable filter. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1998.

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High resolution grating-assisted acousto-optic tunable filter. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1998.

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Proceedings of the First Army Research Laboratory Acousto-Optic Tunable Filter Workshop. Storming Media, 1997.

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United States. National Aeronautics and Space Administration., ed. A Lyman-alpha tunable acousto-optic filter for detecting superthermal flare protons: Final technical report. [Washington, DC]: National Aeronautics and Space Administration, 1994.

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Частини книг з теми "Acousto-optic tunable filter"

Vila-Francés, Joan, Luis Gómez-Chova, Julia Amorós-López, and Javier Calpe-Maravilla. "Configurable Passband Imaging Spectrometer Based on Acousto-optic Tunable Filter." In Advanced Concepts for Intelligent Vision Systems, 206–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-88458-3_19.

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Oshiba, S., T. Kamijoh, and Y. Kawai. "Tunable Fiber Ring Lasers with an Electrically Accessible Acousto-optic Filter." In Photonic Switching II, 241–44. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76023-5_49.

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Jeon, M. Y., H. K. Lee, K. H. Kim, E. H. Lee, S. H. Yun, B. Y. Kim, and Y. W. Koh. "An Electronically Wavelength Tunable Mode-Locked Fiber Laser Using an All-Fiber Acousto-Optic Tunable Filter." In Springer Series in Chemical Physics, 20–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-80314-7_9.

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Li, Qingli, Yiqing Liu, Yinghong Tian, Xiaojin Li, and Shuxian Wang. "An Acousto-Optic Tunable Filter and Digital Micromirror Device Based Projection Display System." In Lecture Notes in Electrical Engineering, 29–35. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-4796-1_4.

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Kaplan, D., P. Tournois, B. Chatel, and A. Monmayrant. "Tunable wavelength pulse shaping of visible NOPA Outputs with an Acousto-Optic Programmable Dispersive Filter." In Springer Series in Chemical Physics, 70–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/3-540-27213-5_22.

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Gupta, Neelam. "Biosensors Technologies: Acousto-Optic Tunable Filter-Based Hyperspectral and Polarization Imagers for Fluorescence and Spectroscopic Imaging." In Biosensors and Biodetection, 293–305. Totowa, NJ: Humana Press, 2009. http://dx.doi.org/10.1007/978-1-60327-567-5_16.

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Morasca, Salvatore, Danilo Scarano, and Steffen Schmid. "Application of LiNbO3 Acousto Optic Tunable Switches and Filters in WDM Transmission Networks at High Bit Rates." In Photonic Networks, 458–72. London: Springer London, 1997. http://dx.doi.org/10.1007/978-1-4471-0979-2_37.

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PRASAD, NARASIMHA S. "DEEP-UV BASED ACOUSTO-OPTIC TUNABLE FILTER FOR SPECTRAL SENSING APPLICATIONS." In Spectral Sensing Research for Water Monitoring Applications and Frontier Science and Technology for Chemical, Biological and Radiological Defense, 229–38. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812833242_0020.

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Rizzo Sierra, José Amílcar, Gastón Sanglier Contreras, Ely Karina Anaya Rivera, César Isaza, and Jonny Paul Zavala de Paz. "A Novel Methodology to Study Particulate Material/Aerosol Pollution via Real-Time Hyperspectral Acousto-Optic Intelligent Spectrometry." In Advances in Civil and Industrial Engineering, 32–37. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-7279-5.ch002.

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Анотація:

Tactic and strategic management and policing of atmospheric pollution in México, specifically by particulate material (PM) from mobile sources (internal combustion powered vehicles), critically requires state-of-the-science technologies due to the problem's complexity including its public health dimension. The authors consider that proper decision making on the problem would benefit from permanent revision on currently employed PM monitoring and measurement systems and also the effort to improve them. These later currently offer information on O(10^0) ultraviolet-visible-infrared (UV-VIS-IR) spectral bands at O(10^0) spatial resolutions and O(10^1) in [min^-1] temporal resolutions. In contrast, they propose the novel use of acousto-optic tunable filter (AOTF) spectrometry to study PM in atmospheric suspension, capable of offering information on O(10^2) UV, VIS, or IR spectral bands at similar or better spatial and temporal resolutions. The potential of AOTF spectrometry towards PM assessment is clear and the objective is to explore its usefulness.

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STOPA, PETER J., JOLANTA I. SOOS, RONALD G. ROSEMEIER, SUDHIR B. TRIVEDI, and SUSAN W. KUTCHER. "DEVELOPMENT OF MINIATURE ACOUSTO OPTIC TUNABLE FILTER (AOTF) SPECTROMETER FOR DETECTION OF TOXIC INDUSTRIAL CHEMICALS (TICS)." In Spectral Sensing Research for Water Monitoring Applications and Frontier Science and Technology for Chemical, Biological and Radiological Defense, 239–48. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812833242_0021.

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Тези доповідей конференцій з теми "Acousto-optic tunable filter"

Yan, Cui. "Infrared acousto-optic tunable filter." In International Conference on Optoelectronic Science and Engineering '90. SPIE, 1990. http://dx.doi.org/10.1117/12.2294650.

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Nakazawa, T. "Acousto-optic tunable filter (AOTF)." In Proceedings of IEEE Workshop on High Performance Switching and Routing (HPSR 2002) - merging Optical and IP Technologies. IEEE, 2002. http://dx.doi.org/10.1109/hpsr.2002.1024628.

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Yun, S. H., I. K. Hwang, and B. Y. Kim. "All-fiber acousto-optic tunable filter." In Optical Fiber Communication Conference. Washington, D.C.: OSA, 1995. http://dx.doi.org/10.1364/ofc.1995.wp16.

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Gupta, Neelam. "Acousto-optic tunable filter as a notch filter." In SPIE Defense + Security, edited by Jay N. Vizgaitis, Bjørn F. Andresen, Peter L. Marasco, Jasbinder S. Sanghera, and Miguel P. Snyder. SPIE, 2016. http://dx.doi.org/10.1117/12.2224238.

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Dimmick, Timothy E., Duane A. Satorius, and Geoffrey L. Burdge. "All-Fiber Acousto-Optic Tunable Bandpass Filter." In Optical Fiber Communication Conference. Washington, D.C.: OSA, 2001. http://dx.doi.org/10.1364/ofc.2001.wj3.

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Zajtsev, Alexei K., Victor V. Kludzin, Leonid B. Kochin, Lev L. Polosin, and Vladimir K. Sokolov. "Colorimeter based on acousto-optic tunable filter." In International Conference on Lasers for Measurements and Information Transfer, edited by Vadim E. Privalov. SPIE, 2000. http://dx.doi.org/10.1117/12.407658.

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Gnewuch, H. "Broadband monolithic superlattice acousto-optic tunable filter." In IEE Colloquium. Microengineering in Optics and Optoelectronics. IEE, 1999. http://dx.doi.org/10.1049/ic:19990871.

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CHENG, LI-JEN, TIEN-HSIN CHAO, and GEORGE REYES. "Acousto-optic tunable filter multispectral imaging system." In Space Programs and Technologies Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1992. http://dx.doi.org/10.2514/6.1992-1439.

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Kasili, Paul M., Joel Mobley, Brian M. Cullum, and Tuan Vo-Dinh. "Bioimaging system using acousto-optic tunable filter." In BiOS 2000 The International Symposium on Biomedical Optics, edited by Tuan Vo-Dinh, Warren S. Grundfest, and David A. Benaron. SPIE, 2000. http://dx.doi.org/10.1117/12.384922.

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Dong, Ying, Zheng You, and Peng Gao. "Acousto-optic tunable filter for spectral imaging." In Photonics Asia 2002, edited by Jianquan Yao and Yukihiro Ishii. SPIE, 2002. http://dx.doi.org/10.1117/12.465653.

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Звіти організацій з теми "Acousto-optic tunable filter"

Paek, Eung Gi, Joon Y. Choe, and Tae K. Oh. Narrow bandwidth grating-assisted acousto-optic tunable filter. Gaithersburg, MD: National Institute of Standards and Technology, 1998. http://dx.doi.org/10.6028/nist.ir.6051.

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Paek, Eung Gi, Joon Y. Choe, and Tae K. Oh. High resolution grating-assisted acousto-optic tunable filter. Gaithersburg, MD: National Institute of Standards and Technology, 1998. http://dx.doi.org/10.6028/nist.ir.6080.

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Crespo, Antonio. Error Measurements in an Acousto-Optic Tunable Filter Fiber Bragg Grating Sensor System. Fort Belvoir, VA: Defense Technical Information Center, May 1994. http://dx.doi.org/10.21236/ada283912.

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Wang, Sean X., Vladimir Pelekhaty, Jolanta Rosemeier, Keith Li, and Robert Scheerer. A Miniature Biosensor Based on Guided Wave Technology and An Acousto-Optic Tunable Filter. Phase 2. Fort Belvoir, VA: Defense Technical Information Center, June 1997. http://dx.doi.org/10.21236/ada367934.

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Gupta, Neelam. Viewgraph Supplement to the Proceedings of the First Army Research Laboratory Acousto-Optic Tunable Filter Workshop. Fort Belvoir, VA: Defense Technical Information Center, March 1997. http://dx.doi.org/10.21236/ada324038.

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Wang, Sean X., Vladimir Pelekhaty, Keith Li, and Jack Crystal. A Very Compact, High Speed and Rugged Acousto-Optic Tunable Filter for Wavelength Division Demultiplexing in Fiber Optic Communication Networks. Phase 1. Fort Belvoir, VA: Defense Technical Information Center, June 1995. http://dx.doi.org/10.21236/ada367944.

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Searcy, Stephen W., and Kalman Peleg. Adaptive Sorting of Fresh Produce. United States Department of Agriculture, August 1993. http://dx.doi.org/10.32747/1993.7568747.bard.

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This project includes two main parts: Development of a “Selective Wavelength Imaging Sensor” and an “Adaptive Classifiery System” for adaptive imaging and sorting of agricultural products respectively. Three different technologies were investigated for building a selectable wavelength imaging sensor: diffraction gratings, tunable filters and linear variable filters. Each technology was analyzed and evaluated as the basis for implementing the adaptive sensor. Acousto optic tunable filters were found to be most suitable for the selective wavelength imaging sensor. Consequently, a selectable wavelength imaging sensor was constructed and tested using the selected technology. The sensor was tested and algorithms for multispectral image acquisition were developed. A high speed inspection system for fresh-market carrots was built and tested. It was shown that a combination of efficient parallel processing of a DSP and a PC based host CPU in conjunction with a hierarchical classification system, yielded an inspection system capable of handling 2 carrots per second with a classification accuracy of more than 90%. The adaptive sorting technique was extensively investigated and conclusively demonstrated to reduce misclassification rates in comparison to conventional non-adaptive sorting. The adaptive classifier algorithm was modeled and reduced to a series of modules that can be added to any existing produce sorting machine. A simulation of the entire process was created in Matlab using a graphical user interface technique to promote the accessibility of the difficult theoretical subjects. Typical Grade classifiers based on k-Nearest Neighbor techniques and linear discriminants were implemented. The sample histogram, estimating the cumulative distribution function (CDF), was chosen as a characterizing feature of prototype populations, whereby the Kolmogorov-Smirnov statistic was employed as a population classifier. Simulations were run on artificial data with two-dimensions, four populations and three classes. A quantitative analysis of the adaptive classifier's dependence on population separation, training set size, and stack length determined optimal values for the different parameters involved. The technique was also applied to a real produce sorting problem, e.g. an automatic machine for sorting dates by machine vision in an Israeli date packinghouse. Extensive simulations were run on actual sorting data of dates collected over a 4 month period. In all cases, the results showed a clear reduction in classification error by using the adaptive technique versus non-adaptive sorting.

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