期刊
APPLIED PHYSICS LETTERS
卷 97, 期 20, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3518065
关键词
-
资金
- National Natural Science Foundation of China [60876049, 60906028, 60636030, 60906027]
We propose a convenient approach for generating compact radially polarized laser beam by integrating concentric gold rings on the surface of a vertical-cavity surface-emitting laser. Due to the polarization selection of the surface plasmon polariton mode excited by the gold rings, a radially polarized beam at 850 nm is experimentally demonstrated. The physical mechanisms of the generation are numerically and analytically analyzed by employing finite-difference time-domain method and metal-insulator-metal plasmonic waveguide theory. (C) 2010 American Institute of Physics. [doi:10.1063/1.3518065]
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