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Proceedings Paper

A novel design and analysis of acoustical signal detection based on laser Doppler
Author(s): Xue Meng; Li-yan Li; Hua-lin Zeng; Yan Zhou
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Paper Abstract

A novel acoustical-vibration signal detection system based on laser Doppler is proposed. The system is based on the M - Z interferometer optical system, and used more adaptive piezoelectric ceramics modulation and demodulation system to restore signal. The whole system satisfies the requirements of non-contact, remote, high sensitivity and anti-interference. It has the advantages of strong stability, compact light path, low cost and easy miniaturization compared with heterodyne interferometer based on Acoustical Optical Modulator (AOM). At last the influence of the laser power fluctuations (frequency instability and amplitude instability) on the system is analyzed theoretically.

Paper Details

Date Published: 20 August 2011
PDF: 5 pages
Proc. SPIE 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, 819216 (20 August 2011); doi: 10.1117/12.899592
Show Author Affiliations
Xue Meng, Changchun Univ. of Science and Technology (China)
Institute of Semiconductors (China)
Li-yan Li, Institute of Semiconductors (China)
Hua-lin Zeng, Institute of Semiconductors (China)
Yan Zhou, Institute of Semiconductors (China)


Published in SPIE Proceedings Vol. 8192:
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging

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