中远红外双波段激光器增益介质匹配  

Gain medium matching for mid-and far-infrared dual-band laser

作　　者：罗威[1] 袁圣付[1] 邹前进[1] 陆启生[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2011年第12期3279-3282,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(10974255)

摘　　要：对中远红外双波段激光器中DF和CO2两种增益介质的匹配进行了研究。根据对DF和CO2两种增益介质分布的理论分析,发现DF相比于CO2介质增益峰值位置更靠前,激活区长度更短,据此设计加工了一台双波段激光器,使CO2气体注入孔位置可调,通过D2和CO2注入孔位置的差别来实现两种介质增益峰值位置的匹配。实验证明了这种设计是有效的,并确定了激光器共同光轴的最佳位置位于D2气注入孔下游3mm,CO2注入孔下游33mm处,此处双波段激光的输出功率均接近最大值。The DF and CO2 laser mediums matching for a mid-and far-infrared dual-band laser was studied.Theoretical analysis of the gain distribution of the two mediums shows that,compared with the CO2 laser medium,the peak gain position of DF laser medium is more ahead,and the gain zone length is much shorter.Then a dual-band laser was designed and manufactured,with the position of the CO2 injection orifices adjustable,and the match between the peak gain positions of DF and CO2 laser mediums can be achieved by the position difference of the D2 and CO2 injection orifices.The experiment shows that the design is effective,and the optimum position of the common optical axis of this dual-band laser is 3 mm downstream of D2 orifices and 33 mm downstream of CO2 orifices,where the output powers of both bands are close to their maxima.

关 键 词：双波段激光器 增益介质 中红外 远红外 DF CO2 

分 类 号：TN248.5[电子电信—物理电子学]