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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。
The near resonance reaction of O2 (1Δ) with I in an oxy-iodinated chemical laser (COIL) is an exothermic reaction; it has the same adverse effect on the lasing process as the quenching exothermic reaction of water vapor and the like, and is inevitable. The effect of quenching exothermic effect on the aerodynamic output power of the cavity was calculated. It is found that the size of the exothermic near-resonance energy is related to the number of photon inversion and lasing, which is proportional to the gain and the intensity distribution of the light in the cavity. Therefore, it mainly occurs in the first half of the upstream region of the laser. The model calculations show that the degree of influence is roughly equivalent to the effect of 7% moisture on the oxy-iodine chemical laser. Improve the theoretical calculation model of oxygen-iodine chemical laser.