Abstract

A birefringent dual-frequency laser with a half-intracavity has been used to develop a laser Doppler velocimeter (LDV). The developed LDV utilizes a new signal-processing method based on a lock-in amplifier to achieve high-resolution velocity measurements and the discrimination of positive and negative velocities. Theoretical analysis and simulation results are presented. The velocity measurement experiments by using a high-precision linear stage are performed to verify the performance of the LDV. Compared with the previous dual-frequency LDVs, the average velocity resolution of the developed LDV is improved from 0.31 mm/s to 0.028 mm/s for a target without the rotational velocity. The measurement results show that our new technique can offer a powerful instrument for metrology sciences.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Self-mixing birefringent dual-frequency laser Doppler velocimeter

Junbao Chen, Hongbin Zhu, Wei Xia, Dongmei Guo, Hui Hao, and Ming Wang
Opt. Express 25(2) 560-572 (2017)

Laser Doppler velocimeter using the self-mixing effect of a semiconductor laser diode

S. Shinohara, A. Mochizuki, H. Yoshida, and Masao Sumi
Appl. Opt. 25(9) 1417-1419 (1986)

Laser Doppler velocimeter with a novel optical fiber probe

Kazuo Kyuma, Shuichi Tai, Koichi Hamanaka, and Masahiro Nunoshita
Appl. Opt. 20(14) 2424-2427 (1981)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription