Abstract

Type II quasi-phase matching was employed for first-order frequency doubling of a single-longitudinal-mode Ti:sapphire laser in periodically poled KTP with a domain-inverted period of $9.01 \mathit{\mu }\mathrm{m}$. In a single-pass configuration, 0.44 mW of UV power at 398.8 nm was generated for an input of 780 mW, corresponding to a normalized conversion efficiency of $0.09\% {\mathrm{W}}^{-1} {\mathrm{cm}}^{-1}$. The nonlinear coefficient $d_{24}=2.82 \mathrm{pm}/\mathrm{V}$ was deduced from the measurements. The larger grating period for the type II quasi-phase-matched second-harmonic-generation process than for type I quasi-phase matching, lowers the fabrication constrains in the short-wavelength region and increases the acceptance bandwidth.

© 1999 Optical Society of America

Simultaneous second-harmonic generation with two orthogonal polarization states in periodically poled KTP

V. Pasiskevicius, S. J. Holmgren, S. Wang, and F. Laurell
Opt. Lett. 27(18) 1628-1630 (2002)

Ultraviolet generation by first-order frequency doubling in periodically poled KTiOPO₄

S. Wang, V. Pasiskevicius, F. Laurell, and H. Karlsson
Opt. Lett. 23(24) 1883-1885 (1998)

Broadening of the second-harmonic phase-matching bandwidth in type II periodically poled KTP

Rui Wu, Yuping Chen, Junfeng Zhang, Xianfeng Chen, and Yuxing Xia
Appl. Opt. 44(26) 5561-5564 (2005)

Generation of 740??mW of blue light by intracavity frequency doubling with a first-order quasi-phase-matched KTiOPO₄ crystal

M. Pierrou, F. Laurell, H. Karlsson, T. Kellner, C. Czeranowsky, and G. Huber
Opt. Lett. 24(4) 205-207 (1999)

Periodically poled potassium niobate for second-harmonic generation at 463 nm

J.-P. Meyn, M. E. Klein, D. Woll, R. Wallenstein, and D. Rytz
Opt. Lett. 24(16) 1154-1156 (1999)