New laser Doppler velocimetry using self-mixing effect in a vertical-cavity surface-emitting laser modulated by triangular current

Huaqiao Gui; Liang Lv; Jun Xu; Deyong He; Feng Li; Anting Wang; Jianping Xie; Tianpeng Zhao; Hai Ming

doi:10.1117/12.572226

17 January 2005 New laser Doppler velocimetry using self-mixing effect in a vertical-cavity surface-emitting laser modulated by triangular current

Huaqiao Gui, Liang Lv, Jun Xu, Deyong He, Feng Li, Anting Wang, Jianping Xie, Tianpeng Zhao, Hai Ming

Author Affiliations +

Proceedings Volume 5644, Optoelectronic Devices and Integration; (2005) https://doi.org/10.1117/12.572226
Event: Photonics Asia, 2004, Beijing, China

Abstract

A new, compact laser Doppler velocimetry is proposed, which is composed of a single-mode vertical-cavity surface-emitting laser modulated by a dynamical triangular current and a collimating lens. It can indicate the direction of velocity without ambiguity in the wide dynamic range of 5.2mm/s to 479.9mm/s when the sampling time is 0.1 second in the measurement. The accuracy of velocity measurement is better than 3.1% in the whole velocity range. What's more, this LDV works very well on different diffusing surfaces, even on a black glossy photographic paper.

Citation Download Citation

Huaqiao Gui, Liang Lv, Jun Xu, Deyong He, Feng Li, Anting Wang, Jianping Xie, Tianpeng Zhao, and Hai Ming "New laser Doppler velocimetry using self-mixing effect in a vertical-cavity surface-emitting laser modulated by triangular current", Proc. SPIE 5644, Optoelectronic Devices and Integration, (17 January 2005); https://doi.org/10.1117/12.572226

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