Laser doppler velocimetry using the optogalvanic effect of $Co_2$ laser

광전류 효과를 이용한 $Co_2$ 레이저 도플러 속도 측정기

  • Published : 1997.12.01


A new laser Doppler velocimeter employing a $CO_2$laser has been developed by using its optogalvanic effect. A change in the electric impedance of a discharge, induced by mixing of a returned wave with an originally existing wave inside the cavity, was employed to detect the Doppler frequency shift. A Doppler frequency shift as much as 60 KHz was detected, and also a good linear relationship between the velocity and the Doppler frequency shift was obtained.



  1. J. Phys v.E1 M. J. Rudd
  2. Appl. Opt. v.14 Toyoichi Tanaka;George B. Benedek
  3. Appl. Opt. v.25 no.9 S. Shimohara;A. Mochizuki;H. Yoshida;Masao Sumi
  4. Appl. Opt. v.23 no.1 James H. Churnside
  5. Opt. Comm. v.30 A. L. S. Smith;S. Moffatt
  6. Appl. Phys. Lett. v.29 R. B. Green;R. A. Keller;G. G. Luther;P. K. Schenck;J. C. Travis
  7. 한국광학회지 v.7 no.2 최종운;김용평;김윤명
  8. US PATENT, 08.689,269 Jong-Woon Choi;Young-Pyung Kim;Youn-Myung Kim