激光技术2011，Vol.35Issue(1)：25-28,78,5.DOI:10.3969/j.issn.1001-3806.2011.01.008
增益导引折射率反导引大模场光纤激光器特性分析
Characteristic analysis of gain guided index antiguided large-mode-area fiber lasers
余晓秋 1李明中 2王建军 1耿远超 1许党朋 1林宏奂 2张锐 1黄小东1
作者信息
- 1. 中国工程物理研究院,激光聚变研究中心,绵阳621900
- 2. 中国工程物理研究院,研究生部,绵阳,621900
- 折叠
摘要
Abstract
In order to study the power distribution and output characteristics of gain guided index antiguided ( GG-IAG )fiber lasers, rate equations of basic model light of double-clod GG-IAG fiber lasers with end-pumping were established, based on the principle and structure characteristics of GG-IAG fibers. After solving the rate equations with tangential method and RungeKurta method, power distribution and output characteristics of basic model light were gained. The results show that parameters of fiber and laser cavity, such as fiber length, output lens reflectivity, have significant influence on gain distribution and output power of basic model light. When using a GG-IAG fiber with a radius of 100μ m, index step -0. 00094 and concentration of ions 5 × 1026/m3 to construct a GG-IAG fiber laser, fiber length needs to be 3cm and output lens reflectivity is 0. 98 and 0. 3respectively, in order to restrain LP11 model, and while inputing a 30W pump-light, 2.42W single-mode laser with large-modearea can be obtained. The analysis shows that by optimally designing cavity mirror reflectivity and fiber length, fundamental mode output with certain efficiency can be obtained in a short length large-mode-area highly doped GG-IAG fiber.关键词
激光技术/增益导引折射率反导引光纤/速率方程/数值分析Key words
laser technique/ gain guided index antiguided fiber/ rate equations/ numerical analysis分类
信息技术与安全科学引用本文复制引用
余晓秋,李明中,王建军,耿远超,许党朋,林宏奂,张锐,黄小东..增益导引折射率反导引大模场光纤激光器特性分析[J].激光技术,2011,35(1):25-28,78,5.
