激光二极管端面泵浦Yb3+/Er3+共掺杂磷酸盐玻璃激光器中的热负载

Thermal loading in laser diode end-pumped Yb3+/Er3+ codoped phosphate glass laser.

作者信息

Feng Suya, Li Shunguang, Chen Li, Chen Wei, Hu Lili

机构信息

Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.

出版信息

Appl Opt. 2010 Jun 10;49(17):3357-62. doi: 10.1364/AO.49.003357.

DOI:10.1364/AO.49.003357

PMID:20539355

Abstract

We investigate, based on laser performance, the fractional thermal loadings in a Yb(3+)/Er(3+) codoped phosphate glass laser. The results indicate that fractional thermal loading increases with Er(3+) doping concentration nonlinearly. Above an Yb(3+) doping level, the increase of Yb(3+) cannot promote laser performance but induces a more serious heat effect. We investigate the main factors that simultaneously affect laser and thermal performances. The results show that the ratio of laser output power to heat is sensitive to beam overlap efficiency, the laser extraction efficiency, especially to quantum efficiency of laser material. The optimized doping concentrations of Yb(3+) and Er(3+) are deduced.

摘要

基于激光性能，我们研究了掺镱（Yb(3+)）/铒（Er(3+)）磷酸盐玻璃激光器中的部分热负载情况。结果表明，部分热负载随铒（Er(3+)）掺杂浓度呈非线性增加。在镱（Yb(3+)）掺杂水平之上，镱（Yb(3+)）的增加并不能提升激光性能，反而会引发更严重的热效应。我们研究了同时影响激光和热性能的主要因素。结果表明，激光输出功率与热量的比值对光束重叠效率、激光提取效率尤其对激光材料的量子效率敏感。推导了镱（Yb(3+)）和铒（Er(3+)）的优化掺杂浓度。