Laser diode Doppler velocimeter with 3-beams and self-mixing effect enabling 3-dimensional velocity measurement

Osamu Mikami; Chiemi Fujikawa

doi:10.1117/12.2227293

29 April 2016 Laser diode Doppler velocimeter with 3-beams and self-mixing effect enabling 3-dimensional velocity measurement

Osamu Mikami, Chiemi Fujikawa

Author Affiliations +

Proceedings Volume 9899, Optical Sensing and Detection IV; 989922 (2016) https://doi.org/10.1117/12.2227293
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

Laser Doppler Velocimeter (LDV) with a laser diode and Self-mixing effect is a new type of downsized and low cost LDV with high precision measurement. We propose a new LDV using a 3-beam fiber irradiation scheme. The sensor head consists of 3-fibers which are intersected perpendicularly each other. This new LDV enables three-dimensional velocity measurement. That is, the magnitude and direction of the velocity vector of the moving object can be measured independent on the relative position between the moving object and the 3-beam sensor head. We also study the case that these 3 beams are not right-angled each other. Operation principle and experimental results for both cases are reported.

Citation Download Citation

Osamu Mikami and Chiemi Fujikawa "Laser diode Doppler velocimeter with 3-beams and self-mixing effect enabling 3-dimensional velocity measurement", Proc. SPIE 9899, Optical Sensing and Detection IV, 989922 (29 April 2016); https://doi.org/10.1117/12.2227293

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