Characterizing topological charge of optical vortex using non-uniformly distributed multi-pinhole plate

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2012,（12）
• 页码范围: 9-11
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201210.120501

摘要

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 nonuniformly-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.