Design and application of lens-array measurement instrument

YI Heng-yu; YE Yi-dong; XIANG Ru-jian; ZHANG Jia-ru; PENG Yong

In order to solve real-time metrical problem on beam wave-front of more than 500mm large aperture,a wave-front measurement system is proposed based on lens-array.Its obvious merit is to avoid machining problem of large aperture optical system,which is used to translate large aperture beam into small aperture beam.Configuration and work principle of this measurement system is introduced,and its system parameters are studied.Then it is measurement capability is analyzed according to a set of special system parameters.Two beams of 1200mm aperture are simulated,and those wave-fronts are measured separately.During this dummy experiments,system scale play an important role in wave-front measurement.The results show that the lens-array measurement can accomplish wave-front measurement of large aperture beam.Finally,its characteristic is evaluated compared with existing H-S wave-front sensor.

1. Institute of Applied Electronic, Chinese Academy of Engineering Physics, Mianyang 621900, China

Received Date: 2005-11-23

Accepted Date: 2006-02-13

Available Online: 2006-11-25

Abstract: In order to solve real-time metrical problem on beam wave-front of more than 500mm large aperture,a wave-front measurement system is proposed based on lens-array.Its obvious merit is to avoid machining problem of large aperture optical system,which is used to translate large aperture beam into small aperture beam.Configuration and work principle of this measurement system is introduced,and its system parameters are studied.Then it is measurement capability is analyzed according to a set of special system parameters.Two beams of 1200mm aperture are simulated,and those wave-fronts are measured separately.During this dummy experiments,system scale play an important role in wave-front measurement.The results show that the lens-array measurement can accomplish wave-front measurement of large aperture beam.Finally,its characteristic is evaluated compared with existing H-S wave-front sensor.

HTML

Reference (9)

[1]	GONCHAROV A V,PETERSEN M O,ANDERSERN T et al.Adaptive optics schemes for future extremely large telescopes[J].Opt Engng,2002,41 (5):1065～1071.
[2]	WANG Q Y,MA L,ZHAO F H et al.Study on fabrication technology of SnO2 micro-lens and its array by using excimer laser-CVD technique[J].Laser Technology,1996,20(3):164～167(in Chinese).
[3]	YAO J,GAO F H,GAO F et al.Fabrication of refractive micro-lens array with enzyme-etching method[J].Laser Technology,2001,25(4):272～274(in Chinese).
[4]	ZHOU R Zh.Adaptive optics[M].Beijing:National Defence Industry Press,1996.121～210(in Chinese).
[5]	YANG H F,JIANG Z F.Rasearch of zernike model wavefront reconstruction of 19-element Hartmann Shack wavefront sensor[J].Laser Technology,2005,29 (5):484～487 (in Chinese).
[6]	OTSUBO M,OKADA K,TDUJICHI J.Measurement of large plane surface shapes by connecting small-aperture interferograms[J].Opt Engng,1994,33(2):608～613.
[7]	ZHANG R Zh,YANG Ch L,SHI Q K et al.Principle and accuracy of the stitching interferometry[J].Acta Optica Sinica,2003,23 (10):1241～1244(in Chinese).
[8]	SU X Y,LI J T.Information optics[M].Beijing:Science Press,1999.3～5 (in Chinese).
[9]	ZHANG J R.Optimized wavefront correcting method of adaptive optics[D].Mianyang:China Academy of Ensineering and Physics,2002.17～18(in Chinese).

Design and application of lens-array measurement instrument

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views