Experimental study about stability of the main beam of SG-Ⅲ prototype facility

ZHOU Wei; HU Dong-xia; LI Qiang; PENG Zhi-tao; JING Feng; LIU Hong-jie; ZHANG Kun

For studying the beam stability of high power solid-state lasers,drift error of main beam was analyzed on the basis of shooting error budget of prototype facility.The drift angle of main laser must be less than 10.6μrad.In 37 minutes,144 frames of far-field images were collected.Two kinds of methods,threshold and gravity model,were used in far-field image processing with MATLAB.The drift was calculated separately in x direction and y direction.The drift of x direction was 3.47μrad and y direction was 4.09μrad.Results indicate that requirement of the main laser stability is met and the requirement of practical shooting is also met.

Corresponding author: ZHOU Wei, ni_he999@yahoo.com.cn;

1. Laser Fusion Research Center, China Academy of Engineering Physics, Mianyang 621900, China

Received Date: 2006-06-09

Accepted Date: 2006-09-18

Available Online: 2007-08-25

Abstract: For studying the beam stability of high power solid-state lasers,drift error of main beam was analyzed on the basis of shooting error budget of prototype facility.The drift angle of main laser must be less than 10.6μrad.In 37 minutes,144 frames of far-field images were collected.Two kinds of methods,threshold and gravity model,were used in far-field image processing with MATLAB.The drift was calculated separately in x direction and y direction.The drift of x direction was 3.47μrad and y direction was 4.09μrad.Results indicate that requirement of the main laser stability is met and the requirement of practical shooting is also met.

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Reference (8)

[1]	ZHU Q H,ZHANG X M,JING F et al.Study of the layout stability of multi-pass amplification system[J].High Power Laser and Particle Beams,1999,11(6):653～656(in Chinese).
[2]	ZACHARIAS R A,BEER N R,BLISS E S et al.Alignment and wavefront control system of national ignition facility[J].Opt Engng,2004,43(12):2873～2884.
[3]	HUANG J,YUAN X D,WANG Ch Ch et al.Measurement of laser angle drift by means of measure microscope[J].Laser Technology,2005,29(3):328～331(in Chinese).
[4]	WANG Ch Y,LIU X F,YUAN Y H et al.The diagnosis on spot and drift of CW-COIL laser beam[J].High Power Laser and Particle Beams,1997,9(1):23～28(in Chinese).
[5]	YU D L,SANG F T,JIN Y Q et al.Study of the drift and deformation for COIL output beam spot[J].High Power Laser and Particle Beams,2001,13(2):151～154(in Chinese).
[6]	LIU Y,JIN Y Q,SANG F T et al.Measure and research of mirrors disalignment for COIL resonator[J].High Power Laser and Particle Beams,2003,15(3):221～224(in Chinese).
[7]	LU F N,LIU D Zh,XU R F et al.Performance of image processing in beams automatic alignment system[J].Optical Technique,2005,31(3):335～337(in Chinese).
[8]	CHEN Zh,CHANG Sh L,HU Y M et al.An imaging processing method for measuring the array position of diffraction spot of high-power laser beam[J].Opto-electronic Engineering,1998,25(1):6～12(in Chinese).

Experimental study about stability of the main beam of SG-Ⅲ prototype facility

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References

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通讯作者: 陈斌, bchen63@163.com

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