title: Direct production of high-power radially polarized output from a side-pumped Nd:YVO4 bounce amplifier using a photonic crystal mirror.
abstract: We produced a high power radially-polarized output directly from a diode-pumped Nd:YVO(4) bounce amplifier, using an autocloned photonic crystal mirror as an output coupler, with a simple cavity configuration. The radially-polarized output power of approximately 6 W was achieved, and a corresponding slope efficiency was estimated to be approximately 17 %. The output was characterized to be an ideal radially-polarized beam from its polarization distribution profiles. The output mode was not an eigenmode in the resonator. We discussed and clarified intra-cavity mode dynamics in terms of polarization distribution in the wavefront.
authors.affiliation: Department of Applied Physics, Faculty of Engineering, Hokkaido University,Kita-13, Nishi-8, Kita-ku, Sapporo, 080-8628, Japan. hamazaki@topology.coe.hokudai.ac.jp
authors.forename: Junichi
authors.initials: J
authors.lastname: Hamazaki
authors.forename: Akira
authors.initials: A
authors.lastname: Kawamoto
authors.forename: Ryuji
authors.initials: R
authors.lastname: Morita
authors.forename: Takashige
authors.initials: T
authors.lastname: Omatsu