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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 10, Iss. 3 — Mar. 1, 2012
  • pp: 032801–

Displacement sensor based on polarization mixture of orthogonal polarized He-Ne laser at 1.15 μm

Zhengqi Zhao, Shulian Zhang, Peng Zhang, Zhaoli Zeng, Yidong Tan, and Yan Li  »View Author Affiliations


Chinese Optics Letters, Vol. 10, Issue 3, pp. 032801- (2012)


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Abstract

Displacement sensor based on the polarization mixture and the cavity tuning of the orthogonal polarized He-Ne laser 1.15 μm is presented. The power tuning curves of He-Ne laser are irregular, and it is difficult to measure the change in cavity length. The distortion of the curves is caused by the higher relative excitation compared with the He-Ne laser at 633 nm. In view of its potential for the wider displacement measuring range, a new method of displacement sensing is developed. Experiments show that displacement measuring stability based on the method of the polarization mixture is better than that of the power tuning curves. The displacement sensor achieves the measuring range of 100 mm, resolution of 144 nm, and linearity of 7 × 10-6.

© 2012 Chinese Optics Letters

OCIS Codes
(140.1340) Lasers and laser optics : Atomic gas lasers
(260.5430) Physical optics : Polarization
(280.3420) Remote sensing and sensors : Laser sensors

ToC Category:
Remote Sensing and Sensors

Citation
Zhengqi Zhao, Shulian Zhang, Peng Zhang, Zhaoli Zeng, Yidong Tan, and Yan Li, "Displacement sensor based on polarization mixture of orthogonal polarized He-Ne laser at 1.15 μm," Chin. Opt. Lett. 10, 032801- (2012)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-10-3-032801

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