Results 21 to 30 of about 2,113 (128)
Characterization of Acoustic Sources by Optical Feedback Interferometry
Proceedings, 2017 Sound can be described as the propagation of pressure variations in compressible media that involves compression and expansion and induces a change in the density of the medium.
Fernando Urgiles +2 more
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Frequency-Shifted Optical Feedback Measurement Technologies Using a Solid-State Microchip Laser
Applied Sciences, 2018 Since its first application toward displacement measurements in the early-1960s, laser feedback interferometry has become a fast-developing precision measurement modality with many kinds of lasers.
Kaiyi Zhu +5 more
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An absolute ranging method based on FMCW principle using dual laser interferometry
AIP Advances, 2023 The FMCW (Frequency Modulated Continuous Wave) laser interferometer can achieve high-precision displacement measurement by calculating the phase of the interference signal.
Bin Sun, Chao Wang, Junfang Song
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SELF-MIXING LASER VIBROMETER WITH RESOLUTION IN THE MICRO AND NANO METERS SCALE
Anales (Asociación Física Argentina), 2021 We present the development of an interferometer capable of making contactless measurements of vibrations. The results show the we achieve micro- and/or nano-metric measurements without the stabilization of the laser.
L. E. Filgueira, C. T. Schmiegelow
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Development of a Confocal Laser Doppler Flowmeter Using Optical Feedback Interferometry Techniques
Proceedings, 2017 We are presenting a novel confocal laser Doppler flowmeter based on optical feedback interferometry. [...]
Carlos Yáñez, Santiago Royo
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Optical Feedback Interferometry Flowmetry Sensor in Microfluidics Chip
Proceedings, 2017 Optical feedback interferometry (OFI) applied to microscale flow sensing is studied theoretically and experimentally. A new model is investigated that predicts the OFI signal.
Yu Zhao +3 more
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Applied Sciences, 2020 To improve the low-frequency isolation performance of optical platforms, an electromagnetic active-negative-stiffness generator (EANSG) was proposed, using nano-resolution laser interferometry sensors to monitor the micro-vibration of an optical platform,
Yamin Zhao +4 more
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Irregular surfaces - measurements and ZEMAX simulations
EPJ Web of Conferences, 2013 Surfaces produced on optical elements are loaded by different kinds of irregularities whose allowable amplitudes are prescribed by optical tolerances defined by an optical designer.
Václavík Jan +3 more
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Current Modulation Induced Stability in Laser Diode Under High Optical Feedback Strength
IEEE Access, 2021 The back-reflection of emitted laser beam (optical feedback, also know as selfmixing) from various external interfaces are sufficient to cause instability, and prohibiting its use in various fields such as communication, spectroscopy, imaging to name a ...
Ajit Jha +4 more
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PhotoniX, 2022 Frequency-swept interferometry (FSI) is a powerful ranging method with high precision and immunity to ambient light. However, the stand-off distance of the current FSI-based ranging system for noncooperative targets is relatively short because the weak ...
Yifan Wang +8 more
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