A novel design and analysis of acoustical signal detection based on laser Doppler

Xue Meng; Li-yan Li; Hua-lin Zeng; Yan Zhou

doi:10.1117/12.899592

19 August 2011 A novel design and analysis of acoustical signal detection based on laser Doppler

Xue Meng, Li-yan Li, Hua-lin Zeng, Yan Zhou

Proceedings Volume 8192, International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging; 819216 (2011) https://doi.org/10.1117/12.899592
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

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.

Citation Download Citation

Xue Meng, Li-yan Li, Hua-lin Zeng, and Yan Zhou "A novel design and analysis of acoustical signal detection based on laser Doppler", 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 (19 August 2011); https://doi.org/10.1117/12.899592

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