Chinese Optics Letters, Volume. 1, Issue 8, 08459(2003)
A new method for angular displacement measurement
We describe a new method for angular displacement measurements that is based on a Fabry-Perot interferometer. A measurement accuracy of 10^(-8) rad is obtained by use of the sinusoidal phase modulating interferometry. Another Fabry-Perot interferometer is used to obtain the key initial angle of incidence.
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Caini Zhang, Xiangzhao Wang. A new method for angular displacement measurement[J]. Chinese Optics Letters, 2003, 1(8): 08459
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