Direct generation of a radially polarized doughnut beam from a single-chip semiconductor laser is demonstrated for the first time by using a two-dimensional photonic crystal, which leads to various super-resolution applications in compact optical systems.
© 2007 OSA
(140.0140) Lasers and laser optics : Lasers and laser optics
(140.2020) Lasers and laser optics : Diode lasers
(250.0250) Optoelectronics : Optoelectronics
(250.7270) Optoelectronics : Vertical emitting lasers
K. Sakai, K. Kitamura, E. Miyai, D. Ohnishi, W. Kunishi, and S. Noda, "Radially Polarized Doughnut Beam Emitted by a Two-Dimensional Photonic-Crystal Laser," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper CMV4.
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