Instrumentation, Techniques, and Measurement

Laser Doppler two-dimensional velocity measurement using optical quadrature detection

[+] Author Affiliations
Koichi Maru, Ryota Sato, Yoko Kamioka

Kagawa University, Graduate School of Engineering, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, Japan

Opt. Eng. 54(12), 124101 (Dec 09, 2015). doi:10.1117/1.OE.54.12.124101
History: Received August 24, 2015; Accepted November 5, 2015
Text Size: A A A

Abstract.  A laser Doppler velocimeter (LDV) for measuring two-dimensional components of velocity vectors based on optical quadrature detection is presented. The LDV uses a simple structure without frequency shifting or multiple wavelengths. In this LDV, the scattered light is monitored in different directions with two detection blocks. In each block, two PDs are used and a 90-deg phase shift is applied to one of the reference beams to detect the absolute value and sign of the beat frequency. We performed an experiment for measuring two-dimensional velocity vectors using a setup introducing orthogonal polarized beams for optical quadrature detection. The experimental results indicate that two-dimensional velocity vectors can be successfully estimated using the proposed method.

Figures in this Article
© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Koichi Maru ; Ryota Sato and Yoko Kamioka
"Laser Doppler two-dimensional velocity measurement using optical quadrature detection", Opt. Eng. 54(12), 124101 (Dec 09, 2015). ; http://dx.doi.org/10.1117/1.OE.54.12.124101


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.