近共振传能放热对氧碘化学激光器性能的影响  

Effects of Heat Release from Near-Resonant Energy Transfer on Chemical Oxygen-Iodine Laser

作　　者：杜燕贻[1] 束小建[1] 李守先[1] 

机构地区：[1]北京应用物理与计算数学研究所,北京100088

出　　处：《光学学报》2007年第7期1224-1227,共4页Acta Optica Sinica

基　　金：国家863计划(863-802-4)资助课题

摘　　要：在氧碘化学激光器(COIL)中,O2(1Δ)与I的近共振传能反应是一个放热反应;它与水汽等的猝灭放热反应一样会对激射过程产生不利影响,而且是不可避免的。计算了猝灭放热效应对光腔气动特性输出功率的影响。得到了近共振传能放热的大小与粒子数反转和激射的光子数相关,即与光腔内的增益、光场强度分布成正比,故主要发生在激光器的上游区前半部分。模型计算表明,其影响程度大致相当于7%水汽所致的对氧碘化学激光器的影响。完善了氧碘化学激光器理论计算模型。In chemical oxygen-iodine laser （COIL）, the near-resonant energy transfer reaction between O2 （^1Δ2） and I is a process of heat release, which is harmful to the stimulated emission as the heat release reaction caused by vapor quenching and unaviodable. The influence of quenching heat release on pneumatic properties of resonator and output power is calculated. The magnitude of near-resonant energy transfer is related to the population inversion and stimulated emission, in other words, is proportional to the gain of resonator and intensity distribution of laser, so this effect mainly occurs at the front part of the entrance of resonator. The effects almost are equivalent to the quenching by 7% H2O population influencing on chemical oxygen-iodine laser, and the theoretical model for chemical oxygeniodine laser is improved.

关 键 词：氧碘化学激光器 近共振传能放热 输出功率 猝灭 

分 类 号：TN248[电子电信—物理电子学] O437[机械工程—光学工程]