基于表面吸收率的强光元件温升仿真与试验研究

doi:10.12382/bgxb.2024.0691

摘要/Abstract

摘要：

连续激光辐照下,强光元件的表面吸收率是导致其异常温升的主要因素。研究发现,强光元件的表面吸收率受多种因素影响,呈现非线性变化。为此提出等效表面吸收率的概念,用于表征强光元件对激光的综合吸收性能。首先建立高斯连续激光辐照强光元件的有限元模型,用于模拟激光辐照下强光元件的温升过程。搭建激光辐照效应试验系统,对强光元件的表面吸收率、表面形貌和表面中心点温升过程进行测试、试验与分析,试验结果验证了所建模型的正确性。根据试验结果修正了模型参数,获得了强光元件对激光的等效表面吸收率。研究结果表明:与实测表面吸收率相比,等效表面吸收率仿真误差更小、精度更高。研究结果可为强光元件的状态监测和污染物防控提供参考。

关键词: 强光元件, 表面吸收率, 连续激光, 温升试验

Abstract:

The surface absorptivity of optical elements is the main factor causing the abnormal temperature rise under continuous laser irradiation. Research has found that the surface absorptivity of optical elements is influenced by multiple factors and exhibits nonlinear variations. Therefore, a concept of equivalent surface absorptivity is proposed to characterize the comprehensive absorption performance of optical elements for laser. Firstly, a finite element model of the optical element irradiated by Gaussian continuous laser is established to simulate the temperature rise process of optical elements under laser irradiation, and a laser irradiation effect experimental system is established. The surface absorptivity, surface morphology and temperature rise process of surface center point of optical elements are measured, tested and analyzed, and the correctness of the prtoposed model is verified by the experimental results. Based on the experimental results, the model parameters are adjusted to obtain the equivalent surface absorptivity of the optical element for laser. The research show that the simulated error of equivalent surface absorptivity is smaller and its simulated precision is higher compared with the measured surface absorptivity, The research results provide reference for the state monitoring of optical element and the pollution prevention and control.

Key words: optical element, surface absorptivity, continuous laser, temperature rise experiment

中图分类号:

TN249

张赫天, 曾雅琴, 孙世岩, 陈忠, 王亮. 基于表面吸收率的强光元件温升仿真与试验研究[J]. 兵工学报, 2025, 46(5): 240691-.

ZHANG Hetian, ZENG Yaqin, SUN Shiyan, CHEN Zhong, WANG Liang. Simulation and Experimental Research on the Temperature Rise of Optical Elements Based on Surface Absorptivity[J]. Acta Armamentarii, 2025, 46(5): 240691-.

图/表 16

图1 激光辐照强光元件的二维轴对称模型

Fig.1 Two-dimensional axisymmetric model of optical element irradiated by laser

表1 强光元件材料的热物性参数[24-25]

Table 1 Thermophysical parameters of optical element material[24-25]

参数	参数
参数	ZrO₂	SiO₂	熔石英
热导率k/(W·cm^-1·K^-1)	0.0178	0.013	0.0138
密度ρ/(g·m^-3)	5.58	2.32	2.20
比热容C/(J·g^-1·K^-1)	0.474	0.35	0.703
熔点T_m/K	2680	1973	1730

图2 不同网格划分下模型表面中心点温度随时间的变化

Fig.2 Surface center temperature of model over time under different mesh division schemes

图3 不同网格划分与超细网格划分的温升计算结果间的差值

Fig.3 D-value between the temperature rise calculated results of ultrafine mesh and different meshes

图4 有限元网格模型

Fig.4 Finite element mesh model

图5 激光辐照效应试验系统

Fig.5 Laser irradiation effect experimental system

表2 激光参数

Table 2 Laser parameters

功率挡位	光斑半径r₀/mm	激光功率密度I₀/(kW·cm^-2)
探测光	1	2
试验光	1	255

图6 不同镜片表面被测区域的吸收率分布

Fig.6 Absorptivity distribution of the measured surface areas on the different lenses

表3 不同镜片的表面吸收率分布

Table 3 Surface absorptivity distribution of different lenses

参数	无污染镜片		有污染镜片
参数	Ⅰ	Ⅱ	Ⅲ	Ⅳ
最大表面吸收率 A_max/10^-6	40.92	87.32	124.68	144281.04
平均表面吸收率 A_avg/10^-6	7.12	5.07	7.26	23353.69
A_max/A_avg	5.75	17.23	17.17	6.18

图7 显微镜下不同镜片的表面图像

Fig.7 Surface images of different lenses under the microscope

图8 激光辐照过程中镜片的表面图像

Fig.8 Surface images of lens during laser irradiation

图9 显微镜下不同镜片激光辐照后的表面图像

Fig.9 Surface images of different lenses after laser irradiation under the microscope

图10 试验测量与实测表面吸收率仿真计算的温度随时间变化曲线

Fig.10 Experimental and simulat temperature-time curves of measured surface absorptivity

图11 不同镜片的等效表面吸收率随时间的变化

Fig.11 Equivalent surface absorptivity curve with time of different lenses

图12 试验测量与等效表面吸收率仿真计算的温度随时间变化曲线

Fig.12 Temperature-time curve of experimental and simulated equivalent surface absorptivity

表4 不同镜片的仿真数据和试验数据之间的误差

Table 4 Error between simulated data and experimental data of different lenses%

参数	无污染镜片		有污染镜片
参数	Ⅰ	Ⅱ	Ⅲ
θ_A_avg	0.20	0.25	4.02
$θ A t$	0.03	0.03	0.04

参考文献 29

[1]	戴一帆, 钟曜宇, 石峰, 等. 强光光学元件加工技术发展[J]. 中国机械工程, 2020, 31(23):2788-2797. doi: 10.3969/j.issn.1004-132X.2020.23.003
	DAI Y F, ZHONG Y Y, SHI F, et al. Development of high light optical element processing technology[J]. China Mechanical Engineering, 2020, 31(23):2788-2797. (in Chinese)
[2]	郑万国, 祖小涛, 袁晓东, 等. 高功率激光装置的负载能力及其相关物理问题[M]. 北京: 科学出版社, 2014.
	ZHENG W G, ZU X T, YUAN X D, et al. Load capacity of high power laser device and related physical problem[M]. Beijing: Science Press, 2014. (in Chinese)
[3]	MANENKOV A A. Fundamental mechanisms of laser-induced damage in optical materials:today’s state of understanding and problems[J]. Optical Engineering, 2014, 53(1): 10901.
[4]	王立斌, 马伟新, 季来林, 等. 三倍频激光下金属颗粒对熔石英元件损伤阈值的影响[J]. 中国激光, 2012, 39(5):22-26.
	WANG L B, MA W X, JI L L, et al. Influence of metal particles on damage threshold of fused silica at 3ω[J]. Chinese Journal of Lasers, 2012, 39(5):22-26. (in Chinese)
[5]	NEAUPORT J, CORMONT P, LAMAINERE L, et al. Concerning the impact of polishing induced contamination of fused silica optics on the laser-induced damage density at 351nm[J]. Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter, 2008(14):281.
[6]	王洪祥, 沈璐, 李成福, 等. 光学元件激光诱导损伤分析及实验研究[J]. 中国激光, 2017, 44(3):98-104.
	WANG H X, SHEN L, LI C F, et al. Analysis and experimental investigation of laser induced damage of optics[J]. Chinese Journal of Lasers, 2017, 44(3):98-104. (in Chinese)
[7]	LIU X Y, CAO F, ZHANG W L, et al. Nanosecond laser damage of 532 nm thin film polarizers evaluated by different testing protocols[J]. Optical Materials, 2024, 149(3):115124.
[8]	YE H, CUI Z Z, YIN L Y, et al. Light-field-enhanced laser damage model for polishing-produced particles in fused silica optical surface[J]. Optics and Laser Technology, 2024, 168:109905.
[9]	LOU Z K, HAN K, ZHANG C F, et al. The characterization of laser-induced thermal damage mechanism of mid-infrared optical coatings with surface contaminants[J]. Physica Scripta, 2020, 95(3): 035507.
[10]	赵元安, 王涛, 张东平, 等. 脉冲激光辐照光学薄膜的缺陷损伤模型[J]. 光子学报, 2005, 34(9): 1372-1375.
	ZHAO Y A, WANG T, ZHANG D P, et al. Defect damage model of optical thin films irradiated by pulsed laser[J]. Acta Photonica Siica, 2005, 34(9): 1372-1375. (in Chinese)
[11]	YANG D H, ZHAO L J, CHENG J, et al. The decisive effects of the stress states and brittle-plasticity of the surface defects on their laser-induced damage thresholds on fused silica surfaces[J]. Ceramics International, 2024, 50(1PB): 2029-2042.
[12]	孔宪俊, 王明海, 王奔, 等. 45% SiC_p/Al复合材料切削表面对高斯激光吸收规律研究[J]. 兵工学报, 2020, 41(5): 1007-1015. doi: 10.3969/j.issn.1000-1093.2020.05.020
	KONG X J, WANG M H, WANG B, et al. Reaserch on absorption of Gaussian laser for the cutting surface of 45% SiC_p/Al composites[J]. Acta Armamentarii, 2020, 41(5): 1007-1015. (in Chinese)
[13]	CHENG X F, MIAO X X, WANG H B, et al. Surface contaminant control technologies to improve laser damage resistance of optics[J]. Advances in Condensed Matter Physics, 2014, 2014( 2014):210-216.
[14]	KOKKINOS D, SCHROEDER H, FLEURY-FRENETTE K, et al. Laser optics in space failure risk due to laser induced contamination[J]. CEAS Space Journal, 2017, 9(2): 153-162.
[15]	梁成杰, 庞向阳, 孙明营, 等. 有机物沉积质量对溶胶凝胶减反膜性能的影响规律[J]. 中国激光, 2023, 50(5):48-57.
	LIANG C J, PANG X Y, SUN M Y, et al. Effects of organic contamination deposition mass on properties of sol-gel antireflective coating[J]. Chinese Journal of Lasers, 2023, 50(5): 48-57. (in Chinese)
[16]	STÉPHANIE P, LUC J R, JÉRÉMIE C, et al. Effect of laser irradiation on silica substrate contaminated by aluminum particles[J]. Applied Optics, 2008, 47(8): 1164-1170. pmid: 18332916
[17]	LIU H J, WANG F R, HUANG J, et al. Experimental study of 355nm laser damage ignited by Fe and Ce impurities on fused silica surface[J]. Optical Materials, 2019, 95(9):109231.
[18]	丁坤艳, 何长涛, 刘志刚, 等. 基于综合光谱法的污染物颗粒诱导光学元件损伤研究[J]. 光谱学与光谱分析, 2023, 43(4): 1234-1241.
	DING K Y, HE C T, LIU Z G, et al. Research on particulate contamination induced laser damage of optical material based on integrated spectroscopy[J]. Spectroscopy and Spectral Analysis, 2023, 43(4): 1234-1241. (in Chinese)
[19]	韩凯, 闫宝珠, 许晓军, 等. 中红外高功率激光系统强光元件热损伤特性[J]. 红外与毫米波学报, 2016, 35(6): 741-747.
	HAN K, YAN B Z, XU X J, et al. Thermal damage mechanism of the optical element used in mid-infrared high power laser system[J]. Journal of Infrared and Millimeter Waves, 2016, 35(6): 741-747. (in Chinese)
[20]	黄训清. 强激光发射大口径内通道密封及热效应研究[D]. 长春: 中国科学院大学(中国科学院长春光学精密机械与物理研究所), 2024.
	HUANG X Q. Research on sealing and thermal effect of a large-diameter inner channel for intense laser emission[D]. Changchun: University of Chinese Academy of Sciences (Changchun Institute of Optics and Precision Mechanics and Physics, Chinese Academy of Sciences), 2024. (in Chinese)
[21]	胡小川, 彭家琪, 张彬. 变形镜热形变及其对光束质量的影响分析[J]. 中国激光, 2015, 42(1): 45-53.
	HU X C, PENG J Q, ZHANG B. Thermal distortion of deformable mirror and its influence on beam quality[J]. Chinese Journal of Lasers, 2015, 42(1): 45-53. (in Chinese)
[22]	张洪济. 热传导[M]. 北京: 高等教育出版社, 1992.
	ZHANG H Q. Heat conduction[M]. Beijing: Higher Education Press, 1992. (in Chinese)
[23]	李娟, 孙文军, 孙京南, 等. 连续激光辐照GaAs材料损伤的数值模拟计算[J]. 光子学报, 2012, 41(5): 571-574.
	LI J, SUN W J, SUN J N, et al. Numerical analysis of CW laser damage in GaAs[J]. Acta Photonica Sinica, 2012, 41(5): 571-574. (in Chinese)
[24]	夏盛强, 蔡继兴, 张潇允, 等. 毫秒-纳秒组合脉冲激光辐照熔石英的温度场应力场数值分析[J]. 红外与激光工程, 2021, 50(增刊2): 46-54.
	XIA S Q, CAI J X, ZHANG X Y, et al. Numerical analysis of temperature field and stress field of fused silica irradiated by millisecond-nanosecond combined pulse laser[J]. Infrared and Laser Engineering, 2021, 50(S2): 46-54. (in Chinese)
[25]	郭鑫. 激光诱导薄膜的热致损伤分析与仿真[D]. 西安: 西安工业大学, 2018.
	GUO X. Thermal damage analysis and simulation of laser-induced thin films[D]. Xi’an: Xi’an Technological University, 2018. (in Chinese)
[26]	陈恒帅, 朱艳丽, 李伟, 等. 基于热传递仿真的热电池激活阶段热特性[J]. 兵工学报, 2022, 43(5): 1194-1200. doi: 10.12382/bgxb.2021.0271
	CHEN H S, ZHU Y L, LI W, et al. Thermal characteristics of thermal batteries during activation based on heat transfer simulation[J]. Acta Armamentarii, 2022, 43(5):1194-1200. (in Chinese) doi: 10.12382/bgxb.2021.0271
[27]	庆凌博. 高能激光系统中铝合金表面铣削仿真及其洁净演化研究[D]. 哈尔滨: 哈尔滨工业大学, 2020.
	QING L B. Research on milling simulation and clean evolution of aluminum alloy surface in high energy laser system[D]. Harbin: Harbin Institute of Technology, 2020. (in Chinese)
[28]	张思阳. 基于信息调查的电力系统高压用户负荷建模研究[D]. 杭州: 浙江大学, 2023.
	ZHANG S Y. Research on load modeling for high-voltage consumers of power system based on information investigation[D]. Hangzhou: Zhejiang University, 2023. (in Chinese)
[29]	CHOW R, TAYLOR J, WU Z L. Absorptance behavior of optical coatings for high-average-power laser applications[J]. Applied Optics, 2000, 39(4): 650-658. pmid: 18337938

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