Measurement method for inhomogeneity of optical material by means of interferometry
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Received Date:
2010-04-28
Accepted Date:
2010-07-02
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Abstract
In order to measure inhomogeneity of optic material accurately,an optical wedge was prepared at a small angle less than 0.117°.Then its inhomogeneity was measured with a Fizeu interferometer.This method was proved to be correct by simulation and experiments in which the inhomogeneity of fused silica was measured,and the peak to valley value of fused silica was 4.33×10-6,and the root mean square value was 0.862×10-6,and the accuracy of this method was less than 4.8×10-7. The results show that the light reflected either from the front surface or from the near surface can be distinguished with this method.
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References
|
[1]
|
JI X L,TAO X Y,LÜ B D,et al.Influence of laser non-uniformity and thermal effects in an inner optical system on the far-field behavior[J].Chinese Journal of Laser,2004,31 (10):1193-1197 (in Chinese). |
|
[2]
|
REITMAYER F,SCHUSTER E.Homogeneity of optical glasses[J].Applied Optics,1972,11(5):1107-1111. |
|
[3]
|
LIU L Q,ZHU Q H,ZHOU K N,et al.Wavefront distortion measurement in high power ultra-short pulse Ti:sapphire laser system[J].Laser Technology,2007,31 (1):95-97 (in Chinese). |
|
[4]
|
TENTORY D.Homogeneity testing of optical glass by holographic intefferometry[J].Applied Optics,1991,30 (7):1399-1404. |
|
[5]
|
GUO P J,YU J Ch,DING Zh Z,et al.Absolute testing method of the homogeneity of optical glass[J].Laser Journal,2003,30(9):1399-1404(in Chinese). |
|
[6]
|
CHIAYU A,JAMES C W.Measurement of the inhomogeneity of a window[J].Optics Engineering,1991,30(9):1399-1404. |
|
[7]
|
ZHANG H R,XU G F,LI B,et al.Measurement of optical homogeneity of MgO:LiNbO3 crystal for optical waveguidc[J].Laser Technology,1999,23(6):342-343(in Chinese). |
|
[8]
|
CHEN G B.Uniformity of local optical thickness for GaN-besed material[J].Laser Technology,2006,30(3):301-303 (in Chinese). |
|
[9]
|
ZHAO L,ZHAO Y P,YANG J,et al.Uniformity test of optical glass by laser holography[J].Infrared and Laser Engineering,2006,35(1):98-101 (in Chinese). |
|
[10]
|
ROBERTS F E,LANGENBECK P.Homogeneity evaluation of very large disks[J].Applied Optics,1969,8 (11):2311-2314. |
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