Laser measurement method of forced vibration in optical systems

Wang Dahui; Zhao Xueqing; Zhang Yongsheng; Sun YuWei; Hu Yun; Yi Aiping; Zhao Jun

doi:10.3788/HPLPB20122409.2017

Volume 24 Issue 09

Aug. 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(09): 2017-2021

Li Yukun, Chen Tao, Deng Bo, et al. Energy spectral response of photocathode for soft X-ray streak camera[J]. High Power Laser and Particle Beams, 2014, 26: 022002. doi: 10.3788/HPLPB201426.022002

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Wang Dahui, Zhao Xueqing, Zhang Yongsheng, et al. Laser measurement method of forced vibration in optical systems[J]. High Power Laser and Particle Beams, 2012, 24: 2017-2021. doi: 10.3788/HPLPB20122409.2017

Li Yukun, Chen Tao, Deng Bo, et al. Energy spectral response of photocathode for soft X-ray streak camera[J]. High Power Laser and Particle Beams, 2014, 26: 022002. doi: 10.3788/HPLPB201426.022002

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Laser measurement method of forced vibration in optical systems

doi: 10.3788/HPLPB20122409.2017

1.
State Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology,P.O.Box 69-26,Xi’an 710024,China

Received Date: 2012-01-10
Rev Recd Date: 2012-03-16
Publish Date: 2012-08-24

Abstract

Abstract

A forced vibration measurement method by laser combining the laser signal and high frequency CCD in optical systems is introduced. The method solves the conversion problem between the vibration signal and laser signal in optical systems, which can not only measure the impact of vibration on the beam stability, but also acquire the frequency characteristics of vibration signals. Forced vibration in an optical system is measured when the frequencies of vibration signals are 150 Hz and 200 Hz by using the method and the attributes of the vibration signals obtained fits those of the input signals. Test and analysis results demonstrate that the method has a time amplitude uncertainty of 6.25 m and frequency resolution of 2 Hz. The handy and efficient method, whose measurement is precise, has been applied to the beam pointing stability study of the multiplexing excimer MOPA laser targeting test platform accordingly.
- optical system,
- forced vibration,
- vibration measurement,
- pointing stability,
- frequency characteristics

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