Modeling and experimental verification of laser self-mixing interference phenomenon with the structure of two-external-cavity feedback

Chen, Peng; Liu, Yuwei; Gao, Bingkun; Jiang, Chunlei

doi:10.1016/j.optcom.2017.11.027

Cited by 9 publications

(1 citation statement)

References 21 publications

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“…Laser self-mixing interferometry (SMI), which is also called the laser optical feedback interference effect, is an emerging and promising nondestructive optical measurement technique [1], [2]. This method reduces the complexity of the optical system configuration compared with that under traditional double-beam interferometry [3]- [6]. SMI occurs when a portion of a laser diode (LD) output beam is reflected or diffused by a moving target and returned to the laser cavity.…”

Section: Introductionmentioning

confidence: 99%

Vibration Measurement Based on the Local Maximum Detection Algorithm for Laser Self-Mixing Interferometry

et al. 2020

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A novel laser self-mixing interferometry vibration measurement algorithm based on the local maximum detection technique is proposed, that can reconstruct micro vibrations rapidly and easily. In this article, the principles of the local maximum detection algorithm are analyzed in detail, and the process of solving the window function is emphasized. The major advantage of the method is that it does not involve any complicated calculations and removes the need for optical/electromechanical components. The validity of the presented method is confirmed by means of simulated signals and demonstrated via several experiments for harmonic and aleatory motion.

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