强激光与粒子束2011，Vol.23Issue(5)：1167-1172,6.DOI:10.3788/HPLPB20112305.1167
钕玻璃的热致断裂及泵浦极限
Thermal fracture and pump limit of Nd:glass
王明哲 1马文 2张永亮 1李明中 2谭吉春 2景峰1
作者信息
- 1. 国防科学技术大学,理学院,长沙,410073
- 2. 中国工程物理研究院,激光聚变研究中心,四川,绵阳,621900
- 折叠
摘要
Abstract
Based on published fracture experiments and 3D transient finite-element analyses, and taking the first principal stress as the criterion and the Griffith crack theory to determine the critical fracture stress, a Weibull statistical model is established to predict the fracture possibility of Nd:glass with certain pump parameters.Other issues which limit the pump power are also presented.The results show that the fracture limit of laser medium depends on the optical polishing technology.For a short pulse and high energy Nd:glass laser, taking America's polishing technology in the 1990s as reference, the pump saturation limits the pump power to 18 kW/cm2 when the repetition rate is lower than 1 Hz, while the thermal fracture limits the pump power when the repetition rate is higher than 10 Hz.关键词
热致断裂/固体激光器/热管理/泵浦极限/钕玻璃Key words
thermal fracture/ solid-state lasers/ thermal effects/ pump limit/ Nd:glass分类
信息技术与安全科学引用本文复制引用
王明哲,马文,张永亮,李明中,谭吉春,景峰..钕玻璃的热致断裂及泵浦极限[J].强激光与粒子束,2011,23(5):1167-1172,6.
