Zeitschriftenartikel: „Optomechanical components“

1

Ryaboy, Vyacheslav M. "Vibration control of optomechanical components." Journal of the Acoustical Society of America 117, no. 4 (2005): 2603. http://dx.doi.org/10.1121/1.4777704.

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2

Podaný, Jan, and Jan Tomíček. "Analysis of small holes manufacturing for optomechanical components." Manufacturing Technology 20, no. 2 (2020): 229–36. http://dx.doi.org/10.21062/mft.2020.036.

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3

Bullis, Ryan, and Julie Gunderson. "Design and Implementation of 3D-Printable Optomechanical Components." Biophysical Journal 116, no. 3 (2019): 577a. http://dx.doi.org/10.1016/j.bpj.2018.11.3107.

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4

Awate, Diwakar M., Cicero C. Pola, Erica Shumaker, Carmen L. Gomes, and Jaime J. Juárez. "3D printed imaging platform for portable cell counting." Analyst 146, no. 12 (2021): 4033–41. http://dx.doi.org/10.1039/d1an00778e.

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Gunderson, Julie E. C., Dylan W. Mitchell, Ryan G. Bullis, John Q. Steward, and William A. Gunderson. "Design and Implementation of Three-Dimensional Printable Optomechanical Components." Journal of Chemical Education 97, no. 10 (2020): 3673–82. http://dx.doi.org/10.1021/acs.jchemed.0c00631.

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6

Liu Xiaobo, 刘小波, 魏晓峰 Wei Xiaofeng, 袁晓东 Yuan Xiaodong, 倪卫 Ni Wei, and 范乃吉 Fan Naiji. "Research on Technology of Field Installation for Amplifier Optomechanical Components of NIF." Laser & Optoelectronics Progress 54, no. 9 (2017): 091409. http://dx.doi.org/10.3788/lop54.091409.

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7

Wu, M. C., L. Y. Lin, S. S. Lee, and C. R. King. "Free-Space Integrated Optics Realized by Surface-Micromachining." International Journal of High Speed Electronics and Systems 08, no. 02 (1997): 283–97. http://dx.doi.org/10.1142/s012915649700010x.

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A surface-micromachined free-space micro-optical bench (FS-MOB) technology has been proposed to monolithically integrate micro-optical elements, optomechanical structures, micropositioners, and microactuators on the same substrate. Novel three-dimensional micro-optical elements have been fabricated by surface-micromachining techniques. The optical axes of these optical elements are parallel to the substrate, which enables the entire free-space optical system to be integrated on a single substrate. Mocro-scale Fresnel lenses, refractive microlenses, mirrors, beam-splitters, gratings, and precision optical mounts have been successfully fabricated and characterized. Integration of micro-optical elements with translation or rotation stages provides on chip optical alignment or optomechanical switching. This new free-space micro-optical bench technology could significantly reduce the size, weight, an cost of most optical systems, and could have a significant impact on optical switching, optical sensing and optical data storage systems as well as packaging of optoelectronic components.

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Bourcier, Roy J. "Near-Zero Shift Attachment for Optoelectronic Components." International Symposium on Microelectronics 2011, no. 1 (2011): 001058–66. http://dx.doi.org/10.4071/isom-2011-tha5-paper3.

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High performance laser-based optoelectronic devices commonly feature the use of free-space optical coupling between the laser diode and optical elements such as filters, secondary harmonic generators and optical fibers. A critical challenge in the assembly of such components is maintaining the required optical alignment precision during attachment of the optical subcomponents to a common platform. In the case of devices based on single mode waveguides, the post-attach shift must often be held to less than a few hundred nanometers to achieve the desired optical coupling efficiency. Historically, these tight tolerances have required the use of costly post-work operations such as laser hammering or re-bend to achieve performance objectives. Over the course of designing several such optoelectronic components, we have used and developed a variety of design concepts and assembly processes which have allowed us to achieve these demanding tolerances, often without the use of post-work. UV-curable structural adhesives and Nd:YAG laser spot welding have been used, individually and in combination, to perform the required sub-micron optomechanical attachments. Several approaches which have been successfully used will be described and their relative merits will be compared. In addition, key design and process elements which can impact post-attach shift will be discussed.

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Ren, Lin, Yunpeng Li, Na Li, and Chao Chen. "Trapping and Optomechanical Sensing of Particles with a Nanobeam Photonic Crystal Cavity." Crystals 9, no. 2 (2019): 57. http://dx.doi.org/10.3390/cryst9020057.

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Particle trapping and sensing serve as important tools for non-invasive studies of individual molecule or cell in bio-photonics. For such applications, it is required that the optical power to trap and detect particles is as low as possible, since large optical power would have side effects on biological particles. In this work, we proposed to deploy a nanobeam photonic crystal cavity for particle trapping and opto-mechanical sensing. For particles captured at 300 K, the input optical power was predicted to be as low as 48.8 μW by calculating the optical force and potential of a polystyrene particle with a radius of 150 nm when the trapping cavity was set in an aqueous environment. Moreover, both the optical and mechanical frequency shifts for particles with different sizes were calculated, which can be detected and distinguished by the optomechanical coupling between the particle and the designed cavity. The relative variation of the mechanical frequency achieved approximately 400%, which indicated better particle sensing compared with the variation of the optical frequency (±0.06%). Therefore, our proposed cavity shows promising potential as functional components in future particle trapping and manipulating applications in lab-on-chip.

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Hammer, Günter, Andreas Kainz, Wilfried Hortschitz, et al. "Detection of Heart and Respiration Rate with an Organic-Semiconductor-Based Optomechanical MEMS Sensor." Proceedings 2, no. 13 (2018): 715. http://dx.doi.org/10.3390/proceedings2130715.

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We present a displacement-sensitive sensor comprising a microelectromechanical (MEMS) chip and organic optoelectronic components capable of measuring the heart and respiration rate on humans. The MEMS sensor relies on the inertial deflection of a small silicon oscillator. The readout of the deflection is optical and works via modulation of the light flux passing through the MEMS. Organic optoelectronics are used as light source and detector, since these offer a homogeneous light distribution and a more compact package in a future integration. Two types of MEMS, differing in their resonance frequency, were designed and characterised in combination with both organic and inorganic optoelectronics prior to measuring heart and respiration rate. Subsequently, by measurements on the neck, pulse and respiration rate were successfully measured.

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Jūrėnas, Vytautas, Gražvydas Kazokaitis, and Dalius Mažeika. "Design of Unimorph Type 3DOF Ultrasonic Motor." Applied Sciences 10, no. 16 (2020): 5605. http://dx.doi.org/10.3390/app10165605.

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A new design of 3 degrees of freedom (DOF) piezoelectric ultrasonic motor (USM) is introduced in this paper. The concept of this design is to incorporate a spherical rotor between two piezoelectric transducers. Each transducer is coupled with a flange, and it operates like a unimorph structure. Such a design of the transducer allows to increase the amplitude of the vibrations and to generate the higher torque and driving force used to achieve 3DOF rotary motion of the spherical rotor. The proposed USM may be used for humanoid robots, optomechanical systems, or small satellites. This USM consists of several components, is lightweight and reliable. Numerical analysis and experimental studies were performed to validate the feasibility of this drive, to find out proper resonant frequencies for the unimorph, and optimize the shape of the flange. Experimental studies were accomplished to validate the results of the numerical analysis and to validate the operating principles of the piezoelectric motor.

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Gaertner, Alexander, and Paola Belloni. "Analysis and Simulation of the Illumination Optics of Rigid Medical Endoscopes." Current Directions in Biomedical Engineering 4, no. 1 (2018): 169–72. http://dx.doi.org/10.1515/cdbme-2018-0042.

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AbstractOur work focuses on enhancing the illumination optics of a rigid medical endoscope using optomechanical simulation. We aim on improving the efficiency of the illumination optics to provide more light in the surgeon’s field of view (FOV) and therefore better image quality. We conducted an extensive market analysis and measured several rigid endoscopes and their external light sources in the lighting technology laboratory. Surprisingly, all endoscopes showed a degree of efficiency below 20 %. Our optimization approach is based first on a photometric and colorimetric analysis carried out with an integrating sphere and a goniophotometer. Secondly, the results obtained are implemented in a 3Doptomechanical simulation model developed with the raytracing software LightTools (Synopsis©). In the simulation model both the geometrical components as well as the critical interfaces are examined considering light coupling at boundary surfaces and light transfer within the illumination optics. Moreover, the optimization takes into account spectral power distribution (SPD) and angular light distribution (ALD) of the light provided from the fiberoptic cable connected to an external light source as well as additional interfering factors like gluing, dispersive absorption and total reflection at critical angles.

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Kienle, Patrick, Lorena Batarilo, Markus Akgül, et al. "Optical Setup for Error Compensation in a Laser Triangulation System." Sensors 20, no. 17 (2020): 4949. http://dx.doi.org/10.3390/s20174949.

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Absolute distance measurement is a field of research with a large variety of applications. Laser triangulation is a well-tested and developed technique using geometric relations to calculate the absolute distance to an object. The advantages of laser triangulation include its simple and cost-effective setup with yet a high achievable accuracy and resolution in short distances. A main problem of the technology is that even small changes of the optomechanical setup, e.g., due to thermal expansion, lead to significant measurement errors. Therefore, in this work, we introduce an optical setup containing only a beam splitter and a mirror, which splits the laser into a measurement beam and a reference beam. The reference beam can then be used to compensate for different error sources, such as laser beam dithering or shifts of the measurement setup due to the thermal expansion of the components. The effectiveness of this setup is proven by extensive simulations and measurements. The compensation setup improves the deviation in static measurements by up to 75%, whereas the measurement uncertainty at a distance of 1 m can be reduced to 85 μm. Consequently, this compensation setup can improve the accuracy of classical laser triangulation devices and make them more robust against changes in environmental conditions.

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Atry, Farid, Israel Jacob De La Rosa, Kevin R. Rarick, and Ramin Pashaie. "Design and Implementation Guidelines for a Modular Spectral-Domain Optical Coherence Tomography Scanner." International Journal of Optics 2018 (2018): 1–22. http://dx.doi.org/10.1155/2018/3726207.

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In the past decades, spectral-domain optical coherence tomography (SD-OCT) has transformed into a widely popular imaging technology which is used in many research and clinical applications. Despite such fast growth in the field, the technology has not been readily accessible to many research laboratories either due to the cost or inflexibility of the commercially available systems or due to the lack of essential knowledge in the field of optics to develop custom-made scanners that suit specific applications. This paper aims to provide a detailed discussion on the design and development process of a typical SD-OCT scanner. The effects of multiple design parameters, for the main optical and optomechanical components, on the overall performance of the imaging system are analyzed and discussions are provided to serve as a guideline for the development of a custom SD-OCT system. While this article can be generalized for different applications, we will demonstrate the design of a SD-OCT system and representative results for in vivo brain imaging. We explain procedures to measure the axial and transversal resolutions and field of view of the system and to understand the discrepancies between the experimental and theoretical values. The specific aim of this piece is to facilitate the process of constructing custom-made SD-OCT scanners for research groups with minimum understanding of concepts in optical design and medical imaging.

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Zhukov, R. A., V. V. Murashov, and V. I. Solov'ev. "Reconstructing the constant component of signals in thermal viewers with optomechanical scanning." Journal of Optical Technology 68, no. 6 (2001): 439. http://dx.doi.org/10.1364/jot.68.000439.

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HERRALA, ESKO, and JUKKA OKKONEN. "IMAGING SPECTROGRAPH AND CAMERA SOLUTIONS FOR INDUSTRIAL APPLICATIONS." International Journal of Pattern Recognition and Artificial Intelligence 10, no. 01 (1996): 43–54. http://dx.doi.org/10.1142/s0218001496000050.

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An imaging spectrometer instrument based on a prism-grating-prism (PGP) element as the dispersive component and advanced camera solutions for on-line applications are presented. The PGP element uses a volume type holographic plane transmission grating made of dichromated gelatin (DCG). Currently, spectrographs have been realized for the 400–1050 nm region but applicable spectral region of the PGP is 380–1800 nm. Spectral resolution is typically between 1.5 and 5 nm. The on-axis optical configuration and simple rugged tubular optomechanical construction of the spectrograph provides a good image quality and resistance to harsh environmental conditions. Spectrograph optics are designed to be interfaced to any standard CCD camera. Special camera structures and operating modes can be used for applications requiring on-line data interpretation and process control.

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Siegel, Jakub, Markéta Kaimlová, Barbora Vyhnálková, et al. "Optomechanical Processing of Silver Colloids: New Generation of Nanoparticle–Polymer Composites with Bactericidal Effect." International Journal of Molecular Sciences 22, no. 1 (2020): 312. http://dx.doi.org/10.3390/ijms22010312.

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The properties of materials at the nanoscale open up new methodologies for engineering prospective materials usable in high-end applications. The preparation of composite materials with a high content of an active component on their surface is one of the current challenges of materials engineering. This concept significantly increases the efficiency of heterogeneous processes moderated by the active component, typically in biological applications, catalysis, or drug delivery. Here we introduce a general approach, based on laser-induced optomechanical processing of silver colloids, for the preparation of polymer surfaces highly enriched with silver nanoparticles (AgNPs). As a result, the AgNPs are firmly immobilized in a thin surface layer without the use of any other chemical mediators. We have shown that our approach is applicable to a broad spectrum of polymer foils, regardless of whether they absorb laser light or not. However, if the laser radiation is absorbed, it is possible to transform smooth surface morphology of the polymer into a roughened one with a higher specific surface area. Analyses of the release of silver from the polymer surface together with antibacterial tests suggested that these materials could be suitable candidates in the fight against nosocomial infections and could inhibit the formation of biofilms with a long-term effect.

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Lee, Chih Kung, C. L. Lin, D. Z. Lin, et al. "Developing a Nanowriter System: Simulation and Experimental Set-Up of a Plasmonic-Based Lens Design." Materials Science Forum 505-507 (January 2006): 1–6. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.1.

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The aim of this article is to introduce a nanowriter system that could lead to a sub-micrometer spot size using a visible light source under ambient conditions. The key component of the system is a focusing optical head, which incorporates a plasmonic-based lens instead of a conventional lens. Based on knowledge of the physical origin of extraordinary transmission and directional beaming, we theorize that the directional beaming phenomenon can be explained simply as a surface plasmon (SP) diffraction along the corrugations as long as the multiple scattering effects are taken into account to modify the dispersion relationship of the surface plasmon. We introduce a Rigorous Coupled Wave Analysis (RCWA) formulation to pursue a precise dispersion relationship needed for the lens design. Comparing the resultant theoretical data between Finite Difference Time Domain (FDTD) simulations and RCWA results, we found good agreement and the many important characteristic parameters needed for an innovative lens design. We also set up a writing-test optomechanical system to examine the photoresist exposure ability of the plasmonic-based lens.

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Li, Qing, Lei Tan, Jin-Lou Ma, Huai-Qiang Gu, Yun-Xia Shi, and Wu-Ming Liu. "Dynamical phase transition of two-component Bose–Einstein condensate with nonlinear tunneling in an optomechanical cavity-mediated double-well system." Journal of Physics B: Atomic, Molecular and Optical Physics 51, no. 15 (2018): 155501. http://dx.doi.org/10.1088/1361-6455/aaca5c.

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Page, Michael A., Maxim Goryachev, Haixing Miao, et al. "Gravitational wave detectors with broadband high frequency sensitivity." Communications Physics 4, no. 1 (2021). http://dx.doi.org/10.1038/s42005-021-00526-2.

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AbstractGravitational waves from the neutron star coalescence GW170817 were observed from the inspiral, but not the high frequency postmerger nuclear matter motion. Optomechanical white light signal recycling has been proposed for achieving broadband sensitivity in gravitational wave detectors, but has been reliant on development of suitable ultra-low loss mechanical components. Here we show demonstrated optomechanical resonators that meet loss requirements for a white light signal recycling interferometer with strain sensitivity below 10−24Hz−1/2at a few kHz. Experimental data for two resonators are combined with analytic models of interferometers similar to LIGO to demonstrate enhancement across a broader band of frequencies versus dual-recycled Fabry-Perot Michelson detectors. Candidate resonators are a silicon nitride membrane acoustically isolated by a phononic crystal, and a single-crystal quartz acoustic cavity. Optical power requirements favour the membrane resonator, while thermal noise performance favours the quartz resonator. Both could be implemented as add-on components to existing detectors.

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Wang, Mingkang, Diego J. Perez-Morelo, and Vladimir Aksyuk. "Overcoming thermo-optical dynamics in broadband nanophotonic sensing." Microsystems & Nanoengineering 7, no. 1 (2021). http://dx.doi.org/10.1038/s41378-021-00281-y.

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AbstractAdvances in integrated photonics open up exciting opportunities for batch-fabricated optical sensors using high-quality-factor nanophotonic cavities to achieve ultrahigh sensitivities and bandwidths. The sensitivity improves with increasing optical power; however, localized absorption and heating within a micrometer-scale mode volume prominently distorts the cavity resonances and strongly couples the sensor response to thermal dynamics, limiting the sensitivity and hindering the measurement of broadband time-dependent signals. Here, we derive a frequency-dependent photonic sensor transfer function that accounts for thermo-optical dynamics and quantitatively describes the measured broadband optomechanical signal from an integrated photonic atomic force microscopy nanomechanical probe. Using this transfer function, the probe can be operated in the high optical power, strongly thermo-optically nonlinear regime, accurately measuring low- and intermediate-frequency components of a dynamic signal while reaching a sensitivity of 0.7 fm/Hz1/2 at high frequencies, an improvement of ≈10× relative to the best performance in the linear regime. Counterintuitively, we discover that a higher transduction gain and sensitivity are achieved with lower quality-factor optical modes for low signal frequencies. Not limited to optomechanical transducers, the derived transfer function is generally valid for describing the small-signal dynamic responses of a broad range of technologically important photonic sensors subject to the thermo-optical effect.

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Morales-Larraga, Alan, Armando Gómez-Vieyra, César Augusto Real-Ramírez, and Jóse Raúl Miranda-Tello. "Visualización de un flujo de convección mediante un arreglo tipo Schlieren." Revista de Ingenieria Innovativa, March 31, 2019, 12–18. http://dx.doi.org/10.35429/joie.2019.9.3.12.18.

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In this work a Schlieren system is proposed. It is used to visualizing a convection flow, caused by the cooling surface a Peltier cell. The experimental assembly elements are a white LED light source (450 nm – 650 nm) that consumes 300 nW of measured electrical power, a Z-type optical reflective relay, a knife, an image acquisition system based on an Edmund EO02018C camera with CMOS RGB sensor and optomechanical components. A program for the analysis of the reference and the convection flow video was designed. As a first step, numerical integration and the phase unwrapping were carrid out to obtain the temperature gradients of the phenomenon under study and its temporal evolution. Then, each detection layer was analyzed, processing the data that provide more information on this phenomenon. It is important to note that the red layer of the camera has a better contrast in the visualization of the phenomenon, however, it is more affected by undesirable light diffraction. Therefore, the green layer of the camera is optimal for analyzing the phenomenon, this study confirms that that the Schlieren technique is ideal for observing phenomena where the temperature gradient is small and there are convection flows.

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Loesche, Frank, and Michael B. Reiser. "An Inexpensive, High-Precision, Modular Spherical Treadmill Setup Optimized for Drosophila Experiments." Frontiers in Behavioral Neuroscience 15 (July 16, 2021). http://dx.doi.org/10.3389/fnbeh.2021.689573.

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To pursue a more mechanistic understanding of the neural control of behavior, many neuroethologists study animal behavior in controlled laboratory environments. One popular approach is to measure the movements of restrained animals while presenting controlled sensory stimulation. This approach is especially powerful when applied to genetic model organisms, such as Drosophila melanogaster, where modern genetic tools enable unprecedented access to the nervous system for activity monitoring or targeted manipulation. While there is a long history of measuring the behavior of body- and head-fixed insects walking on an air-supported ball, the methods typically require complex setups with many custom components. Here we present a compact, simplified setup for these experiments that achieves high-performance at low cost. The simplified setup integrates existing hardware and software solutions with new component designs. We replaced expensive optomechanical and custom machined components with off-the-shelf and 3D-printed parts, and built the system around a low-cost camera that achieves 180 Hz imaging and an inexpensive tablet computer to present view-angle-corrected stimuli updated through a local network. We quantify the performance of the integrated system and characterize the visually guided behavior of flies in response to a range of visual stimuli. In this paper, we thoroughly document the improved system; the accompanying repository incorporates CAD files, parts lists, source code, and detailed instructions. We detail a complete ~$300 system, including a cold-anesthesia tethering stage, that is ideal for hands-on teaching laboratories. This represents a nearly 50-fold cost reduction as compared to a typical system used in research laboratories, yet is fully featured and yields excellent performance. We report the current state of this system, which started with a 1-day teaching lab for which we built seven parallel setups and continues toward a setup in our lab for larger-scale analysis of visual-motor behavior in flies. Because of the simplicity, compactness, and low cost of this system, we believe that high-performance measurements of tethered insect behavior should now be widely accessible and suitable for integration into many systems. This access enables broad opportunities for comparative work across labs, species, and behavioral paradigms.

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Dong, Ying, Jinwu Ye, and Han Pu. "Multistability in an optomechanical system with a two-component Bose-Einstein condensate." Physical Review A 83, no. 3 (2011). http://dx.doi.org/10.1103/physreva.83.031608.

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Zeitschriftenartikel zum Thema „Optomechanical components“

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