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Proceedings Paper

High efficiency Nd:YVO4/RbTiOAsO4 red laser pumped by a diode laser
Author(s): Hongbin Tian; Li Wang; Liqin Mao; Shoupeng Wang; Song Shan; Jianguang Dai
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Paper Abstract

The output performance characteristics of all-solid-state lasers end-pumped by a diode laser have been theoretically analyzed. Furthermore, the optic properties of laser crystals and nonlinear optical materials employed in all-solid-state lasers have been studied and compared by computer numerical simulation. The theoretical analysis and numerical simulation of optical parameters of laser-diode-end-pumped Nd:YVO4 and Nd:YAG lasers were carried out on the basis of theory of crystal level structure and rate equation. The good output properties of high efficiency Nd:YVO4 solid-state laser end-pumped by a diode laser are superior to of Nd:YAG compared in the same conditions. Therefore, Nd:YVO4 crystal has been demonstrated as an ideal laser gain medium in solid-state lasers with account of its high laser gain and low pump threshold, etc. The conversion efficiency of 40% of Nd:YVO4 crystal has been presented with an input pump power of 15W and a crystal length of 1mm. Furthermore, on the basis of phase-matching for the nonlinear optical crystal, the angular tuning curves of KTiOAsO4 and RbTiOAsO4 crystals for type-Ι and type-ΙΙ phase-matching have been simulated by computer, respectively. The tunable wavelengths of RbTiOAsO4 crystal from 1.320μm to 5.484μm in type-Ι, from 1.324μm to 5.424μm in type-ΙΙ were both wider than that of KTiOAsO4 crystal in the mid-infrared bandwidth. Therefore, RbTiOAsO4 crystal is an excellent nonlinear optical crystal of which tuning range is wider than that of KTiOAsO4 crystal in the mid-infrared band. As new crystals, the emerging of RTA and KTA has shown a promise for nonlinear frequency generation throughout the 1-5μm spectral region. Consequently, all-solid-state lasers capable of generating high quality near mid-infrared light have strong use value.

Paper Details

Date Published: 10 June 2006
PDF: 6 pages
Proc. SPIE 6344, Advanced Laser Technologies 2005, 634426 (10 June 2006); doi: 10.1117/12.694427
Show Author Affiliations
Hongbin Tian, Beijing Univ. of Technology (China)
Li Wang, Beijing Univ. of Technology (China)
Liqin Mao, Beijing Univ. of Technology (China)
Shoupeng Wang, Beijing Univ. of Technology (China)
Song Shan, Beijing Univ. of Technology (China)
Jianguang Dai, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 6344:
Advanced Laser Technologies 2005
Ivan A. Shcherbakov; Kexin Xu; Qingyue Wang; Alexander V. Priezzhev; Vladimir I. Pustovoy, Editor(s)

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