We present a simple method to convert a Gaussian laser beam into an annular beam with sub-millimeter diameter and a width of a few tens of microns using a homeotropically oriented nematic liquid crystal.
Creation of a hollow laser beam using self-phase modulation in a nematic liquid crystal
Conference on Lasers and Electro-Optics, 2004. (CLEO). ; 1 ; 1 pp. vol.1
2004-01-01
99006 byte
Conference paper
Electronic Resource
English
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