Numerical study and optimization of third harmonics generation in two-sectioned periodically poled LiTaO3

被引：0

作者：

Louchev, Oleg A. ^{[1
]}

Wada, Satoshi ^{[2
]}

机构：

[1] Megaopto Co Ltd, RIKEN Cooperat Ctr W414, 2-1 Hirosawa, Wako, Saitama 3510106, Japan

[2] RIKEN, Solid State Laser Astron Observ Res Unit, Wako, Saitama 3510198, Japan

来源：

NONLINEAR OPTICS AND APPLICATIONS III | 2009年 / 7354卷

关键词：

Harmonic generation and mixing; Photothermal effects; Nonlinear optics; materials; GREEN LIGHT GENERATION; CW 2ND-HARMONIC GENERATION; LASER; LINBO3; TANTALATE; CRYSTALS; FIELD;

D O I：

10.1117/12.820585

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The feasibility of the cascaded second and third harmonic generation in two-sectioned periodically poled lithium tantalate crystal is analyzed. Simulation using computational non-linear optical model rigorously coupled with the thermal model suggests that 20-30 % efficiency can be achieved for 3 W power 2.2 ns pulsed 1.064 mu m laser operating at frequency 6.8x10(3) Hz if the crystal is composed with optimized section lengths for: (i) 8.0 mu m periodic first-order SHG structure and (ii) 6.6 mu m periodic third-order THG structure. Significant inhibition of THG efficiency can be due to the heat release of SH and TH along the crystal, associated thermal dephasing and lenzing which can be effectively inhibited by decreasing the crystal cross-section dimensions to the practical minimum of 200x200 mu m.

引用

页数：8

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