High efficiency continuous-wave Tm:Ho:GdVO4 laser pumped by a diode

被引：0
|
作者：
Yao, BQ [1 ]
He, WJ [1 ]
Wang, YZ [1 ]
Zhang, XB [1 ]
Li, YF [1 ]
机构：
[1] Harbin Inst Technol, Natl Key lab Tunable Laser Technol, Harbin 150001, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2004年 / 21卷 / 11期
关键词：
D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report a high efficiency cw diode-pumped cryogenic Tm(5 at. %), Ho(0.5 at. %):GdVO4 laser. The pumping source is a fibre-coupled laser diode with fibre core diameter of 0.4mm and numerical aperture of 0.3, supplying power 14.8 W at 793.6nm. For input pump power of 13.6 W at 794.2nm, the maximum output power of 4.2 W, optical-to-optical conversion efficiency of 31% and slope efficiency 38% have been attained at 2.0485 mum. To our knowledge, the operating performance is the best among the previously reported Tm:Ho:GdVO4 lasers. We also analyse the influence of pump wavelengths (from 792nm to 794.2nm) on the output power, the optical-to-optical conversion efliciency increases with the longer pump wavelength which is closer to the absorption peak of 797nm in Tm,Ho:GdVO4.
引用
收藏
页码：2182 / 2183
页数：2
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