Simultaneous generation of helical beams with linear and radial polarization by use of a segmented half-wave plate |
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Authors: | Kawauchi Hikaru Kozawa Yuichi Sato Shunichi Sato Takashi Kawakami Shojiro |
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Institution: | Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan. |
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Abstract: | Simultaneous generation of helical beams with linear and radial polarization is demonstrated by use of a segmented half-wave plate in a Ti:sapphire laser cavity. A linearly polarized Laguerre-Gaussian beam is converted to a radially polarized beam with a spiral phase shift and vice versa. In addition, these two beams coexist in the cavity, and the cavity emits one of these two beams from an output coupler. |
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