低功率激光热透镜效应的模拟及研究
收稿日期: 2020-07-17
修回日期: 2020-08-26
网络出版日期: 2021-04-22
基金资助
国家自然科学基金( 61975058) ; 广州市科技计划项目( 201704020137) ; 蓝盾科技项目( LD20170209) 资助
Simulation and research on thermal lens effect of low power laser
Received date: 2020-07-17
Revised date: 2020-08-26
Online published: 2021-04-22
郭政鑫, 高绮妮, 范紫萍, 陈清楠, 郑博为, 彭 力 . 低功率激光热透镜效应的模拟及研究[J]. 大学物理, 2021 , 40(4) : 79 . DOI: 10. 16854 / j. cnki. 1000-0712. 200306
more sen- sitive to the change of laser power，so it is more suitable for experimental teaching. In
this paper，the thermal lens effect of low-power laser is simulated by using the finite element
method，namely，the temperature field of the me- dium and the focal length of the equivalent thermal
lens are simulated，and the relationship between the focal length of low-power laser and the laser
power as well as the thermal absorption rate and thickness of the medium is quanti- tatively
explored. The simulation results are in good agreement with the experimental data，which provides a
theo- retical basis for exploring the thermal lensing effect of low-power laser.
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