Results 201 to 210 of about 3,712 (221)
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Infrasound detection by laser diode self-mixing interferometry

Chinese Optics Letters, 2013
An alternative technique for infrasound detection based on the self-mixing (SM) interference of a laser diode is described. The principle involved is the dependence of the power emitted by the laser diode on infrasound-induced membrane vibration. The Fourier transform and fringe-counting methods are used to analyze the self-mixing signal.
Chengwei Li Chengwei Li   +2 more
openaire   +1 more source

Eliminating influence of transient oscillations on a self-mixing interferometry

Optical Engineering, 2016
Transient oscillations occur in a self-mixing interferometry (SMI) due to moderate or strong feedback. Such transient dynamics appear in the form of impulsive noises and degrade the sensing performance of an SMI-based sensing system. However, due to the complexity of the dynamics of the system, it is difficult to eliminate such impulse-like transients ...
Zhenghao Liu   +5 more
openaire   +1 more source

Self-mixing interferometry: a novel yardstick for mechanical metrology

SPIE Proceedings, 2016
A novel configuration of interferometry, SMI (self-mixing interferometry), is described in this paper. SMI is attractive because it doesn’t require any optical part external to the laser and can be employed in a variety of measurements – indeed it is sometimes indicated as the “interferometer for measuring without an interferometer”.
openaire   +1 more source

All-phase FFT based distance measurement in laser self-mixing interferometry

Optics and Lasers in Engineering, 2021
Ke Kou, Cuo Wang
exaly  

Fringe slope discrimination in laser self-mixing interferometry using artificial neural network

Optics and Laser Technology, 2020
Ke Kou, Cuo Wang, Tianhong Lian
exaly  

Absolute distance measurement based on multiple self-mixing interferometry

Optics Communications, 2017
Bingkun Gao, Chunlei Jiang
exaly  

Multiple self-mixing interferometry algorithm based on phase modulation for vibration measurement

Optical and Quantum Electronics, 2017
Chunlei Jiang   +2 more
exaly  

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