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CO2激光器功率分布的实验测量及数值模拟

Measurement and numerical simulation of the power distribution of CO2 laser

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摘要

为了获得大功率CO2激光功率分布的解析表达式,采用热敏纸测量大功率CO2激光器在不同功率和高度时的激光功率分布,用MATLAB软件对实验光斑进行图像处理,建立了数学模型模拟激光功率分布,并与采集光斑进行了比较。通过激光热处理实验及温度场计算验证激光功率分布模型,取得的实验结果和理论计算相符合。结果表明,采用热敏纸测量大功率CO2激光功率分布的方法是可行的。得到的功率分布的解析表达式可作为理论计算的条件,具有一定意义。

Abstract

In order to obtain the analytic expression for CO2 laser power distribution, the power distribution of a CO2 laser was measured with thermal paper at the different heights and output power. The experiment images of the laser spot were processed with MATLAB, and a numerical model of laser power distribution was built up and compared with the experimental spot. The obtained analytic expression was verified with the measurement results in laser heat treatment experiments and calculation results of temperature field. The experimental results were in good agreement with the theoretical calculation. The results show that it is feasible to measure the laser power distribution with thermal paper, and it is practical to calculate the power distribution based on the analytic expressions.

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中图分类号:TN248.2+2

DOI:10.3969/j.issn.1001-3806.2012.04.020

所属栏目:激光与光电子技术应用

基金项目:昆明理工大学基金资助项目

收稿日期:2011-12-06

修改稿日期:2011-12-29

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吴钟壮:昆明理工大学 理学院,昆明 650093
伏云昌:昆明理工大学 理学院,昆明 650093
刘洪喜:昆明理工大学 材料科学与工程学院,昆明 650093
张晓伟:昆明理工大学 材料科学与工程学院,昆明 650093
王传琦:昆明理工大学 材料科学与工程学院,昆明 650093
李俊昌:昆明理工大学 理学院,昆明 650093

联系人作者:吴钟壮(fychang_box@hotmail.com)

备注:吴钟壮(1985-),男,硕士研究生,现从事激光应用方面的研究。

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引用该论文

WU Zhong-zhuang,FU Yun-chang,LIU Hong-xi,ZHANG Xiao-wei,WANG Chuan-qi,LI Jun-chang. Measurement and numerical simulation of the power distribution of CO2 laser[J]. Laser Technology, 2012, 36(4): 512-515

吴钟壮,伏云昌,刘洪喜,张晓伟,王传琦,李俊昌. CO2激光器功率分布的实验测量及数值模拟[J]. 激光技术, 2012, 36(4): 512-515

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