基于Nd:YAG晶体的1123 nm激光器实验设计  

Design of 1 123 nm Laser Experiment Based on Nd: YAG Crystal

作　　者：白芬 焦志勇 徐先锋 张会 BAI Fen;JIAO Zhiyong;XU Xianfeng;ZHANG Hui(College of Science,China University of Petroluem (East China),Qingdao 266580, Shandong,China)

机构地区：[1]中国石油大学(华东)理学院

出　　处：《实验室研究与探索》2019年第6期75-78,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金青年基金项目(11504432);山东省中青年科学家科研奖励基金(BS2014DX001);中央高校基本科研业务费(15CX02058A)

摘　　要：设计了一个基于Nd:YAG晶体的激光器教学实验,采用特殊设计的镀有高度选择性介质膜的反射镜严格控制每个谱线处的透射损耗,最终获得了单一、非常规的1123nm谱线激光,同时研究了1123nm激光的平均输出功率和横截面能量分布与泵浦水平和腔长的关系。在泵浦功率125W,腔长310mm情况下,得到的1123nm激光的平均输出功率为11.12W,光束质量因子为4.9±0.1和4.6±0.1。结果表明,较高的泵浦水平有利于输出功率的提高,但是会伴随着较差的光束质量;而较大的腔长则有利用光束质量的改善。A laser experiment based on Nd:YAG crystal was designed. By using cavity mirrors with special coatings,the transmission loss at each line was strictly controlled. Finally,a single and unconventional 1 123 nm line was obtained. The relationship between the average output power and energy distribution on cross-section of the 1 123 nm laser and the pump level and cavity length was also studied. With a pump power of 125 W and a cavity length of 310 mm,the average output power of the 1 123 nm laser is 11.12 W,and the beam quality factors are 4.9±0.1 and 4.6±0.1. The results show that higher pumping levels favor an increase in output power,but are accompanied by poorer beam quality,while larger cavity lengths result in improved beam quality.

关 键 词：激光器 谐振腔 横模 纵模 

分 类 号：O4-33[理学—物理]