宽谱脉冲HF激光在空气中的吸收衰减

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英文篇名：Absorption Attenuation of Wide Spectrum Pulsed HF Laser in Air 作者：朱峰 ; 黄珂 ; 黄超 ; 李高鹏 ; 栾昆鹏 ; 沈炎龙 英文作者：Zhu Feng;Huang Ke;Huang Chao;Li Gaopeng;Luan Kunpeng;Shen Yanlong;State Key Laboratory of Laser Interaction with Matter,Northwest Institute of Nuclear Technology; 关键词：激光器 ; 中红外激光 ; HF激光 ; 输出光谱 ; 吸收衰减 英文关键词：lasers;;mid-infrared laser;;HF laser;;output spectrum;;absorption attenuation 中文刊名：JGDJ 英文刊名：Laser & Optoelectronics Progress 机构：西北核技术研究所激光与物质相互作用国家重点实验室; 出版日期：2018-07-26 17:36 出版单位：激光与光电子学进展 年：2019 期：v.56;No.636 基金：激光与物质相互作用国家重点实验室基金(SKLLIM1511-02) 语种：中文; 页：JGDJ201901026 页数：5 CN：01 ISSN：31-1690/TN 分类号：206-210

摘要

放电引发非链式脉冲HF激光器在全谱输出条件下典型的输出谱线约16条,谱线集中在2.65～3μm波段,大气中H2O分子在2.7μm附近的吸收带对HF激光能量衰减有较大影响。利用放电引发非链式脉冲HF激光器,获得了宽谱脉冲HF激光在空气中的吸收衰减规律。实验结果表明,全谱输出条件下脉冲HF激光在激光器出口处的吸收系数约为0.066m-1,传输40m后吸收系数降低到0.01m-1附近。吸收系数随着传输距离的增加而减小,并趋于常数。通过对非链式脉冲HF激光2.8μm以下输出光谱的抑制,在激光器出口处吸收系数减小到原来的1/3,约为0.022m-1,一定程度上降低了空气吸收对激光能量的衰减。
        There are about 16 spectral lines emitted from discharge initiated non-chain pulsed HF laser,covering from 2.65μm to 3μm,when the laser is working in full spectrum output.The absorption of H2 O molecules at about 2.7μm in air has a great influence on the laser pulse energy.The absorption attenuation rules of wide spectral band pulsed HF laser in air are obtained by using discharge initiated non-chain pulsed HF laser.The experimental results show that the absorption coefficient is about 0.066 m-1 just at the output window of the laser device in full spectrum output,and then decreases to around 0.01 m-1 after 40 m propagation.The absorption attenuation coefficient reduces when the propagation distance increases,and tends to be constant.By suppressing the laser wavelength below 2.8μm of non-chain pulsed HF laser,the attenuation coefficient is reduced to about 1/3 of the value obtained before at the output window,i.e.,about 0.022 m-1,and the attenuation of laser energy by air absorption is reduced to some extent.

引文

[1]Cao B L,Wu C J,Rao R Z,et al.Atmospheric attenuation of the HF and DF laser radiation[J].High Power Laser and Particle Beams,2003,15(1):17-20.曹百灵,邬承就,饶瑞中,等.HF/DF激光传输的大气衰减特性[J].强激光与粒子束,2003,15(1):17-20.
    [2]Wang J,Guo J Z,Li S H,et al.Study on gain characteristic of long wave spectral line in hydrogen fluoride laser[J].Chinese Journal of Lasers,2017,44(4):0411002.王杰,郭建增,李少华,等.氟化氢激光长波谱线增益特性研究[J].中国激光,2017,44(4):0411002.
    [3]Guo J Z,Wang J,Zhao H T,et al.Output spectrum of continuous wave hydrogen fluoride laser[J].Laser&Optoelectronics Progress,2018,55(2):021404.郭建增,王杰,赵海涛,等.连续波氟化氢激光输出光谱特性研究[J].激光与光电子学进展,2018,55(2):021404.
    [4]Luo W,Yuan S F,Zou Q J,et al.Kinetics of the spectral lines of high vibration state in DF/HF lasers[J].Journal of Infrared and Millimeter Waves,2012,31(3):239-242,264.罗威,袁圣付,邹前进,等.DF/HF化学激光器高振动态基频谱线机理分析[J].红外与毫米波学报,2012,31(3):239-242,264.
    [5]Zou Q J,Yuan S F,Luo W,et al.Application of spectrum measurements in working status diagnosis of chemical lasers[J].Laser&Optoelectronics Progress,2011,48(9):091401.邹前进,袁圣付,罗威,等.光谱测量在化学激光器运转状态诊断中的应用[J].激光与光电子学进展,2011,48(9):091401.
    [6]Wang H Y,Yuan S F,Li Q,et al.Chosing cavity axis for a discharge driven CW line selected HF/DFchemical laser[J].High Power Laser and Particle Beams,2006,18(8):1257-1260.王红岩,袁圣付,李强,等.电激励连续波HF/DF选线化学激光器光轴的选择[J].强激光与粒子束,2006,18(8):1257-1260.
    [7]Pan Q K,Xie J J,Shao C L,et al.Spectral characteristics of non-chain pulsed deuterium fluoride laser[J].Chinese Journal of Lasers,2015,42(2):0215001.潘其坤,谢冀江,邵春雷,等.非链式脉冲氟化氘激光器光谱特性[J].中国激光,2015,42(2):0215001.
    [8]Gross R W F,Bott J F.Handbook of chemical lasers[M].Yin H M,Xie X B,Luo J Y,Transl.Beijing:Science Press,1987.格罗斯,博特.化学激光手册[M].尹厚明,谢行滨,罗静远,译.北京:科学出版社,1987.
    [9]Lacour B,Gagnol C,Prigent P,et al.High average power HF/DF laser[J].Proceedings of SPIE,1998,3574:334-340.
    [10]Apollonov V V,Belevtsev A A,Firsov K N,et al.Advanced studies on powerful wide-aperture nonchain HF(DF)laser with a self-sustained volume discharge to initiate chemical reaction[J].Proceedings of SPIE,2003,5120:529-541.
    [11]Ke C J,Tan R Q,Wu J,et al.A new discharge type for non-chain pulsed HF/DF laser[J].Laser Technology,2008,32(2):119-121.柯常军,谭荣清,吴谨,等.非链式脉冲HF/DF激光的新型引发技术[J].激光技术,2008,32(2):119-121.
    [12]Yi A P,Liu J R,Tang Y,et al.Electrically initiated repetitive-pulsed non-chain HF lasers[J].Optics and Precision Engineering,2011,19(2):360-366.易爱平,刘晶儒,唐影,等.电激励重复频率非链式HF激光器[J].光学精密工程,2011,19(2):360-366.
    [13]Zhu F,Huang K,Zhou S Q,et al.Laser beam quality optimization of no-chain pulsed HF laser using unstable resonator[J].Chinese Journal of Lasers,2017,44(4):0401002.朱峰,黄珂,周松青,等.基于非稳腔的非链式脉冲HF激光光束质量优化[J].中国激光,2017,44(4):0401002.