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概述了中红外激光器的应用背景,介绍了国外研究现状及发展趋势,提出了用固体办法实现中红外激光有效输出的技术途径和方案,对固体中红外激光输出所需要的2 μm激光泵浦源技术进行了探讨和方案比较,最终选用了 OPO 技术间接获得2 μm激光的方案。以二极管泵浦1.06 μm激光为泵浦源,采用双谐振腔内 KTP OPO 的方式,进行了激光实验,实现了功率23.9 W 的2 μm波长激光输出。在此2 μm激光泵浦源基础上,提出了实现室温运转的中红外固体激光 ZnGeP_2 OPO 的技术方案并进行了实验,最终成功实现中红外激光输出,在约5 kHz 时,中红外激光输出功率4.09 W。
The application background of the mid-infrared laser is introduced. The current research status and development trend of the mid-infrared laser are introduced. The technical approaches and schemes for realizing the effective output of the mid-infrared laser by the solid method are put forward. The 2 μm laser pumping source Technology was discussed and the program comparison, the final selection of OPO technology indirect access to 2 μm laser program. A diode-pumped 1.06 μm laser was used as the pump source, and a KTP OPO dual resonator was used to conduct a laser experiment to achieve a laser output of 2 μm with a power of 23.9 W. Based on the 2 μm laser pumping source, a scheme of realizing mid-infrared solid-state laser ZnGeP_2 OPO at room temperature is proposed and experimentally carried out. Finally, the mid-infrared laser output is successfully achieved. At about 5 kHz, the mid- 4.09 W.