3~5 μm中红外波段激光源是近年来备受国内外关注的研究热点, 本文综合评述了产生中红外波段激光的5种主要方法(CO2激光倍频技术、泛频CO激光技术、光学参量振荡器、氟化氘激光器、Fe2+∶ZnSe固体激光技术)的国内外发展现状, 总结分析了各种方法的关键技术和存在的问题, 指出了该技术的未来发展趋势。

3~5 μm mid-infrared laser sources have significant applications in many fields and have been intensively studied by researchers. Main technical methods to generate mid-infrared laser radiation are reviewed in this paper, which are as follows: second harmonic generation of CO2 laser, first-overtone CO laser, optical parametric oscillator, DF laser, Fe2+∶ZnSe solid laser. The key techniques and problems of each method are concluded and analyzed. The technology tendencies of mid-infrared laser sources are summarized.