Abstract

Theoretical analyses are presented on the critically phase-matched second-harmonic generation (SHG) in a biaxial crystal with the focused fundamental Gaussian beams. The dependence of the second-harmonic light power on the phase matching conditions, focused geometries, walk-off effects, and absorptions are discussed in detail. Expressions are presented for calculating the light power of the types I and II SHGs in the biaxial crystal, applied to optimize the blue light generation with the LiB3O5 crystal. A maximum conversion efficiency of around 37% is obtained with 798-nm laser power of 500 mW.

© 2010 Chinese Optics Letters

Second-harmonic generation in biaxial crystals for a focused fundamental Gaussian laser beam: application to (–)2-α-(methylbenzylamino)- 5-nitropyridine single crystals

P. Kerkoc, R. T. Bailey, F. R. Cruickshank, and D. Pugh
J. Opt. Soc. Am. B 15(1) 438-445 (1998)

Thermal effects on second-harmonic generation in biaxial molecular crystals

P. Kerkoc, S. Horinouchi, K. Sasaki, Y. Nagae, and D. Pugh
J. Opt. Soc. Am. B 16(10) 1686-1691 (1999)

Detailed analysis of second-harmonic-generation Maker fringes in biaxially birefringent materials by a 4 × 4 matrix formulation

M. Braun, F. Bauer, Th. Vogtmann, and M. Schwoerer
J. Opt. Soc. Am. B 15(12) 2877-2884 (1998)

Theoretical analysis of the spatial phase-matching loci for second-harmonic generation and multiwave-mixing interactions

G. J. Zhang, S. Horinouchi, T. Kinoshita, and K. Sasaki
Appl. Opt. 34(24) 5301-5311 (1995)

General analysis of type I second-harmonic generation with elliptical Gaussian beams

Tim Freegarde, Julian Coutts, Jochen Walz, Dietrich Leibfried, and T. W. Hänsch
J. Opt. Soc. Am. B 14(8) 2010-2016 (1997)