Chinese Optics Letters, Vol. 18, Issue 12, 121401 (2020)
Cylindrical vector beam rotary Nd:YAG disk laser with birefringent crystal
Sanbin Chen1,*, Jianlang Li2, and Ken-Ichi Ueda3
- 1National Key Laboratory on Solid-State Laser, Beijing 100015, China
- 2University of Shanghai for Science and Technology, Shanghai 200093, China
- 3Institute for Laser Science, University of Electro-Communications, Tokyo 182-8585, Japan
A rotating neodymium-doped yttrium aluminum garnet (Nd:YAG) disk laser resonator for efficiently generating vector beams with azimuthal and radial polarization is demonstrated. In the study, the laser crystal rotary for thermal alleviation and polarization discrimination uses c-cut ytterbium vanadate (YVO4). The laser output could be switched between azimuthal and radial polarizations by simply adjusting the cavity length. The laser power reached 4.38 W and 4.64 W for azimuthally and radially polarized beams at the slope efficiencies of 45.3% and 48.5%, respectively. Our study proved that an efficient, high-power vector rotary disk laser would be realistic.
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