激光热透镜焦距测量实验及其公式改进  

Experimental measurement of focal length of thermal lens and improvement on formula

作　　者：何俊芳[1] 朱海永[1] 洪振民[1] 陈久益[1] 金清理[1] 

机构地区：[1]温州大学物理与电子信息工程学院,浙江温州325035

出　　处：《物理实验》2011年第11期22-24,共3页Physics Experimentation

基　　金：国家自然科学基金资助项目(No.10904143);温州大学教改项目(No.lljg43B;No.lljb48B);实验室开放项目资助(No.11SK36A)

摘　　要：通过平平非稳腔法对激光热透镜焦距进行了实验测量,研究了不同抽运光束腰位置对热透镜焦距的影响.从理论上引入抽运光远场发散角和束腰位置,对端面抽运激光晶体热透镜焦距公式进行了改进.The focal length of thermal lens was measured experimentally with plane-plane unstable cavity.The effect of the waist position of the pump beam on the focal length of the thermal lens was studied.An improvement on the formula of the thermal focal length for end-pump crystal laser was carried out,in which both the far-field half-angle and position of the pump beam waist in the active medium were considered.

关 键 词：热透镜 端面抽运 焦距 

分 类 号：TN248.1[电子电信—物理电子学]