Chinese Optics Letters, Volume. 10, Issue 12, 120501(2012)
Characterizing topological charge of optical vortex using non-uniformly distributed multi-pinhole plate
We propose an efficient method for characterizing the orbital angular momentum (OAM) of an optical vortex with a large topological charge (TC) through distinguishing the interference pattern of the non-uniformly-distributed multi-pinholes using fewer pinholes. This method overcomes the limit on large TC detection by multi-point interferometer and can be used to probe optical vortices with arbitrary sizes. In addition, it also has potential application in measuring light beam with OAM from astronomical sources.
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Lei Shi, Linghao Tian, Xianfeng Chen. Characterizing topological charge of optical vortex using non-uniformly distributed multi-pinhole plate[J]. Chinese Optics Letters, 2012, 10(12): 120501
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Received: May. 22, 2012
Accepted: Jun. 21, 2012
Published Online: Oct. 19, 2012
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