Performance optimization of a middle infrared and long infrared dual-band laser

Abstract

对两根放电管驱动的中、远红外双波段(3～5 μm & 8～12 μm)激光器的输出镜透过率、输出窗口等器件与参数进行了优化, 试验获得了25.5 W的中、远红外双波段激光输出, 两个单波段的输出功率均大于10 W, 中红外波段DF激光为TEM00模, 远红外波段CO2激光为TEM20模.利用Φ8 mm光阑对双波段激光器的横模进行了选择, 试验获得了15.4 W的TEM00基横模双波段激光输出.为红外双/多波段探测器阵列及相关系统的应用研究提供了激光光源.;A total output power of 25.5W was achieved after optimizing the transmissivity of the output mirror and the design of the output window in the middle infrared and long infrared dual-band (3～5 μm & 8～12 μm) laser driving by two glow discharge tubes. Power in either single band is greater than 10W. The transverse mode of DF and CO2 laser beam in the middle and long infrared band is TEM00 and TEM20, respectively. An output power of 15.4W was obtained for TEM00 fundamental mode selected with a Φ8mm diaphragm. The dual-band laser can work as light source for research of dual-band or multi-band infrared detector arrays and the related systems.