强激光与粒子束, 2015, 27 (6): 061010, 网络出版: 2015-06-17  

基于增益负反馈的COIL自脉冲方法

COIL self-pulsing method based on gain negative feedback
作者单位
中国科学院 大连化学物理研究所,化学激光重点实验室, 辽宁 大连 116023
摘要
针对超音速化学氧碘激光器增益介质的横流特性,设计了具有增益负反馈的光学谐振腔结构,通过化学反应的超音速流场和光场的耦合仿真,根据具体的激光器运行参数,论证了这种结构实现自脉冲激光的可行性.结果表明:振荡激光在增益区上游放大次数越多,对上游增益介质能量提取能力越强,脉冲调制作用越显著.采用激光光斑缩束再放大的结构设计,脉冲激光的峰值功率提高10~20倍,从理论上证明了增益负反馈的调制方法能够实现横流激光器脉冲激光输出.
Abstract
Based on the transverse flow characteristic of supersonic chemical oxygen iodine laser gain medium,the optical resonator with gain negative feedback structure has been designed.Through coupling simulation of the chemical reaction supersonic flow field and light field,and depending on the laser operation parameters,the feasibility of this structure to realize the pulse laser has been demonstrated.The results show that when the oscillation laser in the gain area upstream is amplified the more times and energy extraction ability for the upstream gain medium is stronger,the pulse modulation effect is more significant.Using structural design that the laser spot is narrowed and then expanded,the peak power of the pulse laser will increase 10 to 20 times,which theoretically proves the modulation method of the gain negative feedback can realize the transverse flow laser with the pulse laser output.
参考文献

[1] Lamberson S,Schall H,Shattuck P.The airborne laser[C]//Proc of SPIE.2002:4760:25-33.

[2] Airborne Laser System (ABL) YAL 1A,United States of America[EB/OL].http://www.Airforce-technology.com/ projects/abl/

[3] Zhang R,Chen F,Song X,et al.Photolysis/electrical discharge initiated pulsed chemical oxygen-iodine lasers using alkyl iodides as the iodine source[C]//Proce of SPIE.1998,1031:308-311.

[4] Yuryshev N N.Chemically pumped oxygen-iodine laser[J].Quantum Electronics,1996,26(7):567-584.

[5] Hicks A,Tirupathi S,Jiang N,et al.Design and operation of a supersonic flow cavity for a non-self-sustained electric discharge pumped oxygen-iodine laser[J].Journal of Physics D:Applied Physics,2007,40(5):1408-1415.

[6] Jirásek V,Schmiedberger J,Censk M,et al.Production of iodine atoms by RF discharge decomposition of CF3I[J].Journal of Physics D:Applied Physics,2011,44:115204.

[7] Li Guofu,Yu Haijun,Duo Liping,et al.Pulsed chemical oxygen iodine lasers excited by pulse gas discharge with the assistance of surface sliding discharge pre-ionization[J].Chinese Physics Letters,2012,29:054212.

[8] Vagin N P,Kochetov I V,Napartovich A P,et al.Dynamics of production of iodine atoms by dissociation of iodides in a pulsed self-sustained discharge[J].Quantum Electronics,2013,43(7):610-615.

[9] 于海军,李国富,多丽萍,等.面阵滑闪火花预电离放电引发脉冲氧碘化学激光的实验研究[J].红外与激光工程,2013,42(5):1166-1169.(Yu Haijun,Li Guofeng,Duo Liping,et al.Experimental investigation of pulsed chemical oxygen-iodine lasers powered by gas discharge with the assistance of surface sliding discharge pre-ionization.Infrared and Laser Engineering,2013,42(5):1166-1169)

[10] Schmiedberger J,Kodymova J,Kovar J,et al.Magnetic modulation of gain in a chemical oxygen-iodine laser[J].Quantum Electronics,IEEE Journal of,1991,27(6):1262-1264.

[11] Highland R G,Crowell P G,Hager G D.630-W average-power Q-switched chemical oxygen iodine laser[C]//Proc of SPIE.1990,1225:512-520.

[12] Hager G D,Kopf D,Hunt B S,et al.The chemical oxygen iodine laser in the presence of a magnetic field.I.Gain measurements and polarization effects[J].Quantum Electronics,1993,29(3):933-943.

[13] 王增强,桑凤亭,张岳龙,等.翼片扰动对COIL超音速平行流混合的影响[J].强激光与粒子束,2014,26:121012.(Wang Zengqiang,Sang Fengting,Zhang Yuelong,et al.Effects of trip tabs on supersonic mixing of parallel flows in COIL .High Power Laser and Particle Beams,2014,26:121012)

[14] 怀英,贾淑芹,金玉奇.超音速化学氧碘激光器光腔扩张角[J].强激光与粒子束,2011,23(2):329-333.(Huai Ying,Jia Shuqin,Jin Yuqi.Resonator expanding angle for supersonic chemical oxygen-iodine laser.High Power Laser and Particle Beams,2011,23(2):329-333)

[15] 吴克难,贾淑芹,怀英,等.超音速化学氧碘激光器内流动与光能提取耦合仿真[J].强激光与粒子束,2011,23(8):2005-2010.(Wu Kenan,Jia Shuqin,Huai Ying,et al.Coupled simulation of flow and optical power extraction in supersonic chemical oxygen-iodine lasers .High Power Laser and Particle Beams,2011,23(8):2005-2010)

[16] 郭红,李艳,安恒斌.基于网格片的氧碘化学激光器多块并行数值模拟[J].强激光与粒子束,2014,26:081002.(Guo Hong,Li Yan,An Hengbin.A patch-based COIL’s parallel calculation using multiblock structured mesh .High Power Laser and Particle Beams,2014,26:081002)

[17] Carroll D L.Chemical laser modeling with genetic algorithms[J].AIAA Journal,1996,34(2):338-346.

公发全, 李义民, 贾春燕, 谭彦楠, 刘通, 徐志, 刘万发. 基于增益负反馈的COIL自脉冲方法[J]. 强激光与粒子束, 2015, 27(6): 061010. Gong Faquan, Li Yimin, Jia Chunyan, Tan Yannan, Liu Tong, Xu Zhi, Liu Wanfa. COIL self-pulsing method based on gain negative feedback[J]. High Power Laser and Particle Beams, 2015, 27(6): 061010.

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