Frequency-shifted laser feedback interferometry in non-planar ring oscillators
Optics and Laser TechnologyLaser feedback interferometry (LFI) has a wide range of applications such as displacement, distance and velocity measurements. LFI has been realized in many types of lasers but has never been reported in non-planar ring oscillators (NPRO) to the best of our knowledge. Here, we present a new type of LFI based on an NPRO laser.
Rong Zhu, Weitong Fan, Chunzhao Ma
exaly +4 more sources
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
doaj +2 more sources
Phase-shifted laser feedback interferometry [PDF]
Optics Letters, 1998 We have introduced the techniques of phase-shifting interferometry into a laser feedback interference microscope based on a helium-neon laser. With moderate feedback, multiple reflections between the sample and the laser are shown to be negligible, and the interferometer responds sinusoidally with a well-characterized fringe modulation.
Ben Ovryn, James H Andrews
exaly +3 more sources
Optimization of Optical Trapping and Laser Interferometry in Biological Cells
Applied Sciences, 2020 Optical trapping and laser interferometry enable the non-invasive manipulation of colloids, which can be used to investigate the microscopic mechanics of surrounding media or bound macromolecules.
Yujiro Sugino +2 more
doaj +2 more sources
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
doaj +2 more sources
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
doaj +2 more sources
Laser feedback interferometry: a tutorial on the self-mixing effect for coherent sensing
, 2015 This tutorial presents a guided tour of laser feedback interferometry, from its origin and early development through its implementation to a slew of sensing applications, including displacement, distance, velocity, flow, refractive index, and laser ...
Taimre, Thomas +6 more
core +2 more sources
Development of the Stitching—Oblique Incidence Interferometry Measurement Method for the Surface Flatness of Large-Scale and Elongated Ceramic Parts [PDF]
SensorsWith the increasing demand for high-performance ceramic guideways in precision industries, accurate flatness measurement of large-scale, rough ceramic surfaces remains challenging.
Shuai Wang +5 more
doaj +2 more sources
Determining Ethanol Content of Liquid Solutions Using Laser Feedback Interferometry with a Terahertz Quantum Cascade Laser [PDF]
IEEE Sensors Letters, 2018 Over the last decade, terahertz (THz) time-domain spectroscopy has been investigated as a technique for assaying the ethanol content of liquid solutions-indeed, operating at THz frequencies addresses some of the challenges that traditional optical refraction measurements face, such as delineation between sugar-ethanol content, florescence, and problems
Karl Bertling +12 more
openaire +7 more sources
A Novel Signal Processing Strategy for Short-Range Laser Feedback Interferometry Sensors
2025 25th International Conference on Digital Signal Processing (DSP)Accepted to the 2025 25th International Conference on Digital Signal ...
Alexander Zimmer +2 more
openaire +3 more sources