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化学激光器是以释能化学反应提供能源,并且以化学反应产生粒子数反转为基础的。由于化学储能的巨大,这类器件目前输出的连续波功率已达兆瓦级,大大高于所有其他激光器。近年来,由于流动介质均匀性的改善和采用选模能力高的光腔,光束质量亦已达到近衍射极限。近年来的研究集中在发展短波长化学激光体系,从较早的DF(～3.8μm),HF(2.7μm)到近期的O_2-I体系(1.315μm),以及HF的泛频跃迁激光(～1.35μm)。更进一步则希望发展可见光波段的化学激光器。这有可能通过电子激发态的受激辐射实现,但是看来尚需较长时间的努力。
Chemical lasers are energy-dependent chemical reactions that provide energy and are based on the inversion of the number of particles produced by a chemical reaction. Due to the large chemical storage, these devices currently output CW power levels up to megawatts, significantly higher than all other lasers. In recent years, due to the improvement of the homogeneity of the flowing medium and the use of the optical cavity with high mode selection capability, the beam quality has also reached the limit of diffraction. In recent years, the research focused on the development of short wavelength chemical laser systems, from the earlier DF (~ 3.8μm), HF (2.7μm) to the recent O_2-I system (1.315μm) 1.35 μm). Further hope is the development of visible laser band chemical lasers. This is possible through stimulated emission of electronically excited states, but it seems that a longer period of effort is required.