期刊
OPTICS LETTERS
卷 35, 期 20, 页码 3495-3497出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.35.003495
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资金
- National Natural Science Foundation of China (NSFC) [10974101]
- Ministry of Science and Technology of China [2009DFA52300]
- National Research Foundation of Singapore [NRF-G-CRP 2007-01]
We report a 2D static binary phase Dammann vortex grating that combines the features of a conventional vortex grating and a Dammann grating. This grating uniformly distributes energies among the diffraction orders, so the low-efficiency problem at higher diffraction orders of conventional vortex gratings is resolved and the detection range of the optical vortices (OVs) is greatly increased. Experimental results of OV detection using a fabricated 5 x 5 Dammann vortex grating are given, and the topological charge detection range from -12 to +12 is achieved. The potential applications of such gratings include transmitting, receiving, and multiplexing OV beams in optical communication systems. (C) 2010 Optical Society of America
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