%0 Journal Article
%A LIN Yiping
%A CHEN Kexiong
%A LI Lingyan
%A LIU Jingfeng
%T Thermal Lens Effect with Low-Power Laser
%D 2022
%R 10.13438/j.cnki.jdzk.2022.04.007
%J Journal of Jishou University(Natural Sciences Edition)
%P 34-41
%V 43
%N 4
%X COMSOL Multiphysics 5.5 software was used to build a model to study the relationship between the change of lens focal length and the change of laser power.The experimental scheme was designed through theoretical analysis and the formula for calculating the focal length of the thermal lens was determined.Experiments were conducted to explore the thermal lens effect with low power laser,and the visualization of the thermal lens effect with low-power laser was realized.The soy sauce lens was measured as thermal concave lens.Using knife edge method and software fitting measurement of laser radius,combined with other data to calculate the focal length of the thermal concave lens,the measured relative error was 3.6%.Finally,taking the focal length as the intensity reference of the thermal lens effect,the measured intensity of the thermal lens effect was positively correlated with the optical power.
%U https://zkxb.jsu.edu.cn/EN/10.13438/j.cnki.jdzk.2022.04.007