Simultaneous generation of helical beams with linear and radial polarization by use of a segmented half-wave plate.
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.
Kawauchi
Hikaru
H
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan.
Kozawa
Yuichi
Y
Sato
Shunichi
S
Sato
Takashi
T
Kawakami
Shojiro
S