二极管泵浦连续波和被动锁模Yb:GSO激光器。

Diode-pumped continuous-wave and passively mode-locked Yb:GSO laser.

作者信息

Li Wenxue, Pan Haifeng, Ding Liang'en, Zeng Heping, Zhao Guangjun, Yan Chengfeng, Su Liangbi, Xu Jun

出版信息

Opt Express. 2006 Jan 23;14(2):686-95. doi: 10.1364/opex.14.000686.

DOI:10.1364/opex.14.000686

PMID:19503386

Abstract

We report on both continuous-wave and passively mode-locked laser actions of a new ytterbium-doped laser crystal Yb:Gd(2)SiO(5) (Yb:GSO) under high-power diode-end-pumping. Due to the anisotropic and compact crystal structure, Yb:GSO exhibits a large manifold splitting of Yb(3+) ions, and a Yb:GSO laser can be operated efficiently with negligible reabsorption losses at emission wavelengths. In the continuous-wave operation, a Yb:GSO laser was operated with a slope efficiency of 49% near 1094 nm--the longest laser wavelength achieved for Yb(3+) lasers. Passive mode locking was obtained with a semiconductor saturable-absorber mirror. At a pump power of 6.23 W, a maximum average output power of 638 mW was obtained with the repetition rate of 145.5 MHz.

摘要

我们报道了一种新型掺镱激光晶体Yb:Gd₂SiO₅（Yb:GSO）在高功率二极管端面泵浦下的连续波和被动锁模激光行为。由于其各向异性和紧凑的晶体结构，Yb:GSO表现出Yb³⁺离子的大能级分裂，并且Yb:GSO激光器在发射波长处能够以可忽略的重吸收损耗高效运行。在连续波运行中，一台Yb:GSO激光器在1094 nm附近以49%的斜率效率运行，这是Yb³⁺激光器所实现的最长激光波长。使用半导体可饱和吸收镜实现了被动锁模。在泵浦功率为6.23 W时，获得了638 mW的最大平均输出功率，重复频率为145.5 MHz。