Abstract

Picosecond pulsed frequency-doubled optical vortices were generated using a pair of $\beta \text{-}{\mathrm{BaB}}_2{\mathrm{O}}_4$ crystals with their $c$ axes inverted. This arrangement produced high-quality ultraviolet vortex output with low spatial separation of the phase singularity at a conversion efficiency of $\sim 40\%$. We also discuss the theoretical spatial form and beam propagation of the ultraviolet vortex output.

© 2017 Optical Society of America

Ultraviolet vortex generation using periodically bonded β-BaB₂O₄ device

Yuta Sasaki, Mio Koyama, Katsuhiko Miyamoto, Yoshimi Ariga, Tomomi Onda, Ichiro Shoji, and Takashige Omatsu
Opt. Express 22(11) 12829-12835 (2014)

Beam propagation of efficient frequency-doubled optical vortices

Taximaiti Yusufu, Yuta Sasaki, Shungo Araki, Katsuhiko Miyamoto, and Takashige Omatsu
Appl. Opt. 55(19) 5263-5266 (2016)

Comparison study of CsLiB₆O₁₀ and β-BaB₂O₄ as nonlinear media for optical parametric oscillators

Li Wang and Yanbin Men
Appl. Opt. 42(15) 2720-2723 (2003)

High-power, high-repetition-rate performance characteristics of β-BaB₂O₄ for single-pass picosecond ultraviolet generation at 266 nm

S. Chaitanya Kumar, J. Canals Casals, Junxiong Wei, and M. Ebrahim-Zadeh
Opt. Express 23(21) 28091-28103 (2015)

Attaining 186-nm light generation in cooled ?-BaB₂O₄ crystal

Hikaru Kouta and Yasuhiko Kuwano
Opt. Lett. 24(17) 1230-1232 (1999)