Volume 42 Issue 9
Feb.  2014
Turn off MathJax
Article Contents
Article Navigation >  Infrared and Laser Engineering  > 2013  >  42(9): 2380-2385

Tang Wei, Guo Jin, Shao Junfeng, Guo Ruhai, Wang Tingfeng. Analysis of far-field characteristics with repetition frequency of TEA CO2 laser[J]. Infrared and Laser Engineering, 2013, 42(9): 2380-2385.
Citation: Tang Wei, Guo Jin, Shao Junfeng, Guo Ruhai, Wang Tingfeng. Analysis of far-field characteristics with repetition frequency of TEA CO2 laser[J]. Infrared and Laser Engineering, 2013, 42(9): 2380-2385.
shu

Analysis of far-field characteristics with repetition frequency of TEA CO2 laser

  • 1.

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

  • 2.

    University of Chinese Academy of Sciences,Beijing 100049,China

  • Received Date: 2013-01-14
  • Rev Recd Date: 2013-02-19
  • Publish Date: 2013-09-25
  • In order to study the influence of TEA CO2 laser repetition frequency on far-field beam quality, the temperature field and thermal deformation distribution of the mirror were calculated firstly by the finite element analysis of thermodynamics instantaneous method with TEA CO2 laser irradiation of different repetition frequencies. Then, mirror thermal distortion was fitted by Zernike polynomials. Finally, far-field characteristics of different repetition frequencies TEA CO2 laser were obtained by the angular spectrum propagation theory of diffraction. The theory and simulation results show that with the increasing of laser repetition frequency, the mirror temperature and thermal deformation are gradually increasing. After thermal deformation effect, Sr and the average energy density Ed decrease, and parameter gradually increases in the far field. Comparing with 10 Hz, Ed of 300 Hz decreases 40%, peak power in the far field decreases 43% and beam waist broadens 60%. When the laser repetition frequency is greater than 100 Hz,due to the appearance of peaks and valleys on the mirror, the far-field beam quality decreases significantly. The results of this paper can provide the reference to TEA CO2 laser launch system.
  • [1]
    [2] Baranov V Y. High repetition rate pulsed gas lasers and their applications in chemistry and isotope separation[J]. IEEE,1983, 19(10): 1577-158.
    [3] Karapuzikov A I, Malov A N, Sherstov I V. Tunable TEA CO2 laser for long-range DIAL lidar[J]. Infrared Phys Tech, 2000, 41(2): 77-85.
    [4]
    [5] Hasson V. Review of design concepts and diagnostics for 100 kW class repetitive pulsed CO2 laser[C]//SPIE, 2003, 5120:717-730.
    [6]
    [7]
    [8] Liu Wenguang, Rao Peng, Hua Weihong. Effects of thermal distortion of Si mirror irradiated by non-uniformity laser intensity on laser propagation[J]. High Power Laser and Particle Beams, 2008, 20(10): 1615-1618. (in Chinese) 刘文广, 饶鹏, 华卫红. 非均匀激光辐照下硅镜热变形对光束传输特性的影响[J]. 强激光与粒子束, 2008, 20(10): 1615-1618.
    [9]
    [10] Li long, Nie Jianping, Dong Wuwei, et al. Time-varying temperature filed of Nd:YAG rod end-pumped by pulsed LD[J]. Infrared and Laser Engineering, 2011, 40(9): 1657-1661. (in Chinese) 李隆, 聂建萍, 董武威, 等. 脉冲激光二极管端面泵浦Nd:YAG棒时变温度场[J]. 红外与激光工程, 2011, 40(9): 1657-1661.
    [11] Peng Yufeng, Han Junpeng, Zhang Yi, et al. 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.
    [12]
    [13]
    [14] Hello P, Vinet J Y. Analytical models of thermal aberrations in massive mirrors[J]. J Phys, 1990, 1267-1282.
    [15] Qi Wenzong, Huang Wei, Zhang Bin, et al. Finite element analysis of thermal distortion of infrared CW laser reflectors[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.
    [16]
    [17]
    [18] Liu Yue'ai. A simple method for Zernike polynomial fitting in fringe analysis[J]. Acta Optica Sinica, 1985, 5(4): 368-373. (in Chinese) 刘月爱. 条纹分析中一种简单的Zernike多项式拟合方法[J]. 光学学报, 1985, 5(4): 368-373.
    [19]
    [20] Yang Guilong,Shao Chunlei,Guo Ruhai,et al. Experimental study of unstable resonator for high-power TEA CO2 laser[J]. High Power Laser and Particle Beams, 2010, 22(10): 2478-2482. (in Chinese) 杨贵龙, 邵春雷, 郭汝海, 等. 高功率TEA CO2激光器非稳腔实验研究[J]. 强激光与粒子束, 2010, 22(10): 2478-2482.
    [21] Dennis L. Multiple phase-screen calculation of the temporal behavior of stochastic waves[J]. IEEE, 1983, 71(6): 722-737.
  • 加载中
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

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索
Get Citation
PDF
XML

Article Metrics

Article views(418) PDF downloads(150) Cited by()

Related
Proportional views

Analysis of far-field characteristics with repetition frequency of TEA CO2 laser

  • 1. State Key Laboratory of Laser Interaction with Matter,Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;
  • 2. University of Chinese Academy of Sciences,Beijing 100049,China
  • Received Date: 2013-01-14
  • Rev Recd Date: 2013-02-19
  • Publish Date: 2013-09-25

Abstract: In order to study the influence of TEA CO2 laser repetition frequency on far-field beam quality, the temperature field and thermal deformation distribution of the mirror were calculated firstly by the finite element analysis of thermodynamics instantaneous method with TEA CO2 laser irradiation of different repetition frequencies. Then, mirror thermal distortion was fitted by Zernike polynomials. Finally, far-field characteristics of different repetition frequencies TEA CO2 laser were obtained by the angular spectrum propagation theory of diffraction. The theory and simulation results show that with the increasing of laser repetition frequency, the mirror temperature and thermal deformation are gradually increasing. After thermal deformation effect, Sr and the average energy density Ed decrease, and parameter gradually increases in the far field. Comparing with 10 Hz, Ed of 300 Hz decreases 40%, peak power in the far field decreases 43% and beam waist broadens 60%. When the laser repetition frequency is greater than 100 Hz,due to the appearance of peaks and valleys on the mirror, the far-field beam quality decreases significantly. The results of this paper can provide the reference to TEA CO2 laser launch system.

    HTML

Reference (21)

Catalog

    版权所有 © 2019 《红外与激光工程》编辑部｜ Address: 58 Zhonghuan West Road, Tianjin Airport Economic Zone｜ Post Code: 300308

    津ICP备19007885号-1

    Supported by: Beijing Renhe Information Technology Co. Ltd  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return