英语翻译或者说化学激光是指：激活介质的粒子数反转是通过化学反应的热效应,把能量转变为粒子的振动能和转动能而实现的激光系统.产生化学激光必须具备的条件是：（1）在化学反应中

Question

英语翻译
或者说化学激光是指：激活介质的粒子数反转是通过化学反应的热效应,把能量转变为粒子的振动能和转动能而实现的激光系统.产生化学激光必须具备的条件是：
（1）在化学反应中一定要释放出能量.
（2）化学反应所释放的能量要能转化为反应产物分子的热力学能,使其形成激发态粒子.
（3）要求化学反应达到特定能级的反应速率快（即泵浦速率快）,使生成的激发态粒子不致在发生激光之前由于自发辐射衰减或分子间碰撞传能而消耗掉,这样才能保证到达上、下能级粒子数的反转（即粒子能在高能级上发生积累）.
（4 要求激发态粒子自发辐射的寿命极短,有足够的跃迁概率.

Answer 1

alternatively,the chemical laser refers to:the laser system generated by the population inversion,that activates the medium through chemical reaction heating effect,converting the energy to the vibrational and rotational energy of the particles.The necessary conditions for generating chemical laser are:
1,the reactions have to be exothermic.
2,the energy released from reactions must convert to thermodynamic energy to form activated particles.
3.the reactions reach the particular energy level with rapid rate (high pumping rate),to avoid the activated particles from spontaneous attenuation of radiation or enery loss by collision before laser generation.Thus it ensures the population inversion of adjacent energy levels (The particals could accumulate on the higher energy level).
4,The activated particles must have extremely low retention time of spontaneous radiation to maintain the adequate transition probability.