Paper Title:
Self-Mixing Interferometer Based on Four-Bucket Integration Technique for Micro-Displacement Measurement
  Abstract

A novel self-mixing interference signal analysis method is proposed based on the use of an electro-optic modulator (EOM). Self-mixing interference occurs in the laser cavity by reflecting the light from a mirror-like target in front of the laser. Sinusoidal phase modulation of the beam is obtained by an EOM in the external cavity. The phase of the interference signal is calculated by four-bucket integration technique. The interferometer is applied to measure the displacement of a high-precision commercial PZT with an accuracy of a few nanometers.

  Info
Periodical
Key Engineering Materials (Volumes 381-382)
Edited by
Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek
Pages
53-56
DOI
10.4028/www.scientific.net/KEM.381-382.53
Citation
D. M. Guo, M. Wang, "Self-Mixing Interferometer Based on Four-Bucket Integration Technique for Micro-Displacement Measurement", Key Engineering Materials, Vols. 381-382, pp. 53-56, 2008
Online since
June 2008
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Price
$32.00
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