Simulations and experiments on optical inner-channel thermal deformation for high-power laser system

Guo Ruhai; Chen Ning; Shi Kui; Wang Bing; Shi Long

Volume 42 Issue 11

Feb. 2014

Turn off MathJax

Article Contents

Article Navigation > Infrared and Laser Engineering > 2013 > 42(11): 2925-2930

Guo Ruhai, Chen Ning, Shi Kui, Wang Bing, Shi Long. Simulations and experiments on optical inner-channel thermal deformation for high-power laser system[J]. Infrared and Laser Engineering, 2013, 42(11): 2925-2930.

Citation:

Guo Ruhai, Chen Ning, Shi Kui, Wang Bing, Shi Long. Simulations and experiments on optical inner-channel thermal deformation for high-power laser system[J]. Infrared and Laser Engineering, 2013, 42(11): 2925-2930.

Simulations and experiments on optical inner-channel thermal deformation for high-power laser system

1.
Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
2.
State Key Laboratory of Laser Interaction with Matter,Changchun 130033,China

Received Date: 2013-03-11
Rev Recd Date: 2013-04-10
Publish Date: 2013-11-25

Abstract

In order to research the influence on the beam quality due to cumulative effect of the inner channel thermal deformation in the high energy laser system, the theoretical simulation and experimental study were performed. Firstly, three typical laser power 10 kW, 50 kW and 100 kW with the unstable resonator were selected to analyze thermal deformation of mirror through the finite element analyze of thermodynamics instantaneous method. Then the wave front aberration could be calculated by ray-tracing theory. Finally, Strehl ratio, parameter of far-filed beam can be calculated and comparably analyzed by Fresnel diffraction integration. The simulation results show that due to the effect of inner channel thermal deformation, eccentric phenomenon and astigmatism of far-filed beam emerge, and peak power and the focused ability decrease. With the increasing of reflection times, Strehl ratio decreases and parameter increases, and tilt, astigmatism and coma of x direction gradually increase, which become the main aberration. Comparing with above theoretical simulation study, the thermal deformation experimental platform was built to measure the single copper mirror of 99% reflectivity with the 10 kW TEA CO2 laser. Through the equivalent scale rule, the experimental results can also represent the 50 kW and 100kW power level. The measurement precision of thermal deformation of mirror is smaller than /15 and agree well with the simulation results. The results show that the thermal deformation of mirror cannot be neglected when the laser power great than 10 kW and has a great influence on the far-field transmission properties with the power increasing and reflection times. These results can also provide the reference to the thermal aberration analyze for high power laser system and can be applied to the field of laser nuclear fusion and laser weapon etc.
- high-power laser,
- unstable resonator,
- optical beam quality,
- Strehl ratio

References

[1]
[2]	Perran G P, Marciniak M A, Goda M. High energy laser weapon: technology overview[C]//SPIE, 2004, 5414: 1-25
[3]	LaFortune K N, Hurd R L, Fochs S N, et al. Technical challenges for the future of high energy lasers[C]//SPIE, 2007, 6454(64540O): 64540O-1-64540O-11.
[4]
[5]
[6]	Qi Wenzong, Huang Wei, Zhang Bin, et al. Effects of thermal distortion of Si mirror irradiated by non-uniformity laser intensity on laser propagation[J]. High Power Laser and Particle Beams, 2004, 16(8): 953-956. (in Chinese)齐文宗, 黄伟, 张彬, 等. 红外连续激光反射镜热畸变的有限元分析[J]. 强激光与粒子束, 2004, 16(8): 953-956.
[7]	Peng Yufeng, Cheng Zuhai, Zhang Yaoning, et al. Thermal distortion in a super-thin multilayer metal mirror with silicon substrate subjected to irradiation of high power lasers[J]. Chinese J Lasers, 2002, 29(1): 21-24. (in Chinese)彭玉峰, 程祖海, 张耀宁, 等. 强激光辐照下硅基片超薄多层金属镜的热畸变[J]. 中国激光, 2002, 29(1): 21-24.
[8]
[9]	Yu Wenfeng, Sun Feng, Cheng Zuhai, et al. Effects on the mirror's thermo-deformation and deflection of different supporting way[J]. High Power Laser and Particle Beams, 2005, 17(1): 29-32. (in Chinese)余文峰, 孙峰, 程祖海, 等. 夹持方式对镜面热变形及偏转的影响[J]. 强激光与粒子束, 2005, 17(1): 29-32.
[10]
[11]
[12]	Zhou Ciming, Cheng Zuhai. Influence of thermal deformations of high power laser mirror on beam transfer characteristic[J]. High Power Laser and Particle Beams, 2003, 15(10): 969-972. (in Chinese)周次明, 程祖海. 强激光反射镜热畸变对光束传输特性的影响[J]. 强激光与粒子束, 2003, 15(10): 969-972.
[13]	Du Yanyi, An Jianzhu, Shu Xiaojian. Effect of thermal distortion of mirror on characteristics of laser beam in unstable resonator[J]. High Power Laser and Particle Beams, 2008, 20(8): 1333-1338. (in Chinese)杜燕贻, 安建祝, 束小建. 腔镜热变形对非稳腔光场特性的影响[J]. 强激光与粒子束, 2008, 20(8): 1333-1338.
[14]
[15]
[16]	Peng Yufeng, Han Junpeng, Zhang Yi. Influence of the thermal distortion of resonator mirrors on propagation properties of laser beams through atmosphere[J]. Infrared and Laser Engineering, 2011, 40(12): 2442-2446. (in Chinese)彭玉峰, 韩俊鹏, 张毅, 等. 腔镜热畸变对激光在大气中传输特性的影响[J]. 红外与激光工程, 2011, 40(12): 2442-2446.
[17]	Hu Yongjun, Mao Hongjun, Fu Sihua, et al. New criterion for alignment degree of cavity mirrors in unstable resonator[J]. Infrared and Laser Engineering, 2011, 40(11): 2244-2248. (in Chinese)胡永军, 毛宏军, 伏思华, 等. 非稳腔腔镜准制度判定的新方法[J]. 红外与激光工程, 2011, 40(11): 2244-2248.
[18]
[19]	Rao Peng. Influence of thermal distortion on the propagation of beams in high energy laser channel[D]. Changsha: National University of Defense Technology, China, 2009: 30-34. (in Chinese)饶鹏. 镜面热畸变对高能激光系统内光路光束传输影响的数值计算[D]. 长沙: 国防科技大学, 2009: 30-34.
[20]
[21]	Duan Qingrui. Photoaacoustic Photothermal Technique and Its Applications[M]. Beijing: Science Press, 1991: 78-80. (in Chinese)殷庆瑞. 光声光热技术及其应用[M]. 北京: 科学出版社, 1991: 78-80.
[22]
[23]	Ji X L, Tao X Y, Lv B D. Influence of laser non-uniformity and thermal effects in an inner optical system on the far-field behavior[J]. Chinese J Lasers, 2004, 31(10): 1193-1197. (in Chinese)季小玲, 陶向阳, 吕百达. 激光非均匀形和内光路热效应对远场特性的影响[J]. 中国激光, 2004, 31(10): 1193-1197.

Proportional views

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Get Citation

PDF

XML

Article Metrics

Article views(574) PDF downloads(155) Cited by()

Proportional views

Simulations and experiments on optical inner-channel thermal deformation for high-power laser system

1. Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;

2. State Key Laboratory of Laser Interaction with Matter,Changchun 130033,China

Received Date: 2013-03-11

Rev Recd Date: 2013-04-10

Publish Date: 2013-11-25

Key words:

Abstract: In order to research the influence on the beam quality due to cumulative effect of the inner channel thermal deformation in the high energy laser system, the theoretical simulation and experimental study were performed. Firstly, three typical laser power 10 kW, 50 kW and 100 kW with the unstable resonator were selected to analyze thermal deformation of mirror through the finite element analyze of thermodynamics instantaneous method. Then the wave front aberration could be calculated by ray-tracing theory. Finally, Strehl ratio, parameter of far-filed beam can be calculated and comparably analyzed by Fresnel diffraction integration. The simulation results show that due to the effect of inner channel thermal deformation, eccentric phenomenon and astigmatism of far-filed beam emerge, and peak power and the focused ability decrease. With the increasing of reflection times, Strehl ratio decreases and parameter increases, and tilt, astigmatism and coma of x direction gradually increase, which become the main aberration. Comparing with above theoretical simulation study, the thermal deformation experimental platform was built to measure the single copper mirror of 99% reflectivity with the 10 kW TEA CO2 laser. Through the equivalent scale rule, the experimental results can also represent the 50 kW and 100kW power level. The measurement precision of thermal deformation of mirror is smaller than /15 and agree well with the simulation results. The results show that the thermal deformation of mirror cannot be neglected when the laser power great than 10 kW and has a great influence on the far-field transmission properties with the power increasing and reflection times. These results can also provide the reference to the thermal aberration analyze for high power laser system and can be applied to the field of laser nuclear fusion and laser weapon etc.

HTML

Reference (23)

[1]
[2]	Perran G P, Marciniak M A, Goda M. High energy laser weapon: technology overview[C]//SPIE, 2004, 5414: 1-25
[3]	LaFortune K N, Hurd R L, Fochs S N, et al. Technical challenges for the future of high energy lasers[C]//SPIE, 2007, 6454(64540O): 64540O-1-64540O-11.
[4]
[5]
[6]	Qi Wenzong, Huang Wei, Zhang Bin, et al. Effects of thermal distortion of Si mirror irradiated by non-uniformity laser intensity on laser propagation[J]. High Power Laser and Particle Beams, 2004, 16(8): 953-956. (in Chinese)齐文宗, 黄伟, 张彬, 等. 红外连续激光反射镜热畸变的有限元分析[J]. 强激光与粒子束, 2004, 16(8): 953-956.
[7]	Peng Yufeng, Cheng Zuhai, Zhang Yaoning, et al. Thermal distortion in a super-thin multilayer metal mirror with silicon substrate subjected to irradiation of high power lasers[J]. Chinese J Lasers, 2002, 29(1): 21-24. (in Chinese)彭玉峰, 程祖海, 张耀宁, 等. 强激光辐照下硅基片超薄多层金属镜的热畸变[J]. 中国激光, 2002, 29(1): 21-24.
[8]
[9]	Yu Wenfeng, Sun Feng, Cheng Zuhai, et al. Effects on the mirror's thermo-deformation and deflection of different supporting way[J]. High Power Laser and Particle Beams, 2005, 17(1): 29-32. (in Chinese)余文峰, 孙峰, 程祖海, 等. 夹持方式对镜面热变形及偏转的影响[J]. 强激光与粒子束, 2005, 17(1): 29-32.
[10]
[11]
[12]	Zhou Ciming, Cheng Zuhai. Influence of thermal deformations of high power laser mirror on beam transfer characteristic[J]. High Power Laser and Particle Beams, 2003, 15(10): 969-972. (in Chinese)周次明, 程祖海. 强激光反射镜热畸变对光束传输特性的影响[J]. 强激光与粒子束, 2003, 15(10): 969-972.
[13]	Du Yanyi, An Jianzhu, Shu Xiaojian. Effect of thermal distortion of mirror on characteristics of laser beam in unstable resonator[J]. High Power Laser and Particle Beams, 2008, 20(8): 1333-1338. (in Chinese)杜燕贻, 安建祝, 束小建. 腔镜热变形对非稳腔光场特性的影响[J]. 强激光与粒子束, 2008, 20(8): 1333-1338.
[14]
[15]
[16]	Peng Yufeng, Han Junpeng, Zhang Yi. Influence of the thermal distortion of resonator mirrors on propagation properties of laser beams through atmosphere[J]. Infrared and Laser Engineering, 2011, 40(12): 2442-2446. (in Chinese)彭玉峰, 韩俊鹏, 张毅, 等. 腔镜热畸变对激光在大气中传输特性的影响[J]. 红外与激光工程, 2011, 40(12): 2442-2446.
[17]	Hu Yongjun, Mao Hongjun, Fu Sihua, et al. New criterion for alignment degree of cavity mirrors in unstable resonator[J]. Infrared and Laser Engineering, 2011, 40(11): 2244-2248. (in Chinese)胡永军, 毛宏军, 伏思华, 等. 非稳腔腔镜准制度判定的新方法[J]. 红外与激光工程, 2011, 40(11): 2244-2248.
[18]
[19]	Rao Peng. Influence of thermal distortion on the propagation of beams in high energy laser channel[D]. Changsha: National University of Defense Technology, China, 2009: 30-34. (in Chinese)饶鹏. 镜面热畸变对高能激光系统内光路光束传输影响的数值计算[D]. 长沙: 国防科技大学, 2009: 30-34.
[20]
[21]	Duan Qingrui. Photoaacoustic Photothermal Technique and Its Applications[M]. Beijing: Science Press, 1991: 78-80. (in Chinese)殷庆瑞. 光声光热技术及其应用[M]. 北京: 科学出版社, 1991: 78-80.
[22]
[23]	Ji X L, Tao X Y, Lv B D. Influence of laser non-uniformity and thermal effects in an inner optical system on the far-field behavior[J]. Chinese J Lasers, 2004, 31(10): 1193-1197. (in Chinese)季小玲, 陶向阳, 吕百达. 激光非均匀形和内光路热效应对远场特性的影响[J]. 中国激光, 2004, 31(10): 1193-1197.

Simulations and experiments on optical inner-channel thermal deformation for high-power laser system

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views