^Detection Research of Solid Surface Laser Ultrasonic Pulse Using Laser Heterodyne Interferometric Method

Gong Yuliang; Zhang Yongzhi; Liang Haiyan

doi:10.13374/j.issn1001-053x.1998.05.022

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Gong Yuliang, Zhang Yongzhi, Liang Haiyan. ^Detection Research of Solid Surface Laser Ultrasonic Pulse Using Laser Heterodyne Interferometric Method[J]. Chinese Journal of Engineering, 1998, 20(5): 502-506. doi: 10.13374/j.issn1001-053x.1998.05.022

Citation:

Gong Yuliang, Zhang Yongzhi, Liang Haiyan. ^Detection Research of Solid Surface Laser Ultrasonic Pulse Using Laser Heterodyne Interferometric Method[J]. Chinese Journal of Engineering, 1998, 20(5): 502-506. doi: 10.13374/j.issn1001-053x.1998.05.022

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^Detection Research of Solid Surface Laser Ultrasonic Pulse Using Laser Heterodyne Interferometric Method

doi: 10.13374/j.issn1001-053x.1998.05.022

Applied Science School, UST Beijing, Beijing 100083, China

Received Date: 1997-10-05
Available Online: 2021-08-27

Abstract

Abstract

The measuring principle and experiment of Laser Ultrasonic Pulse by Laser Heterodyne Interfermetric Method is described. The effect of collimation angle of signal light、reference light upon S/N radio is discussed, and the effect of incidence of signal light upon bean spliter on heterodyne signal intensity is discussed too. In order to increase the detective signal intensity, the method of heterodyne interferomtric conjugate output is developed.
- heterodyne interferometer,
- detection,
- laser ultrasonic pulse