电激励红外多波段化学激光器中稀释剂注入方式对激光输出的影响  

Effect of two different diluent injecting methods on a discharge excited infrared multi-band chemical laser

作　　者：王红岩[1] 袁圣付[1] 张鹏[1] 姜宗福[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073

出　　处：《强激光与粒子束》2005年第3期339-342,共4页High Power Laser and Particle Beams

基　　金：国家自然科学基金资助课题(10304025)

摘　　要：以DF为例,在一台单放电管电激励红外多波段激光器上测试了两种稀释剂注入方式下激光器的输出特性。激光器输出功率、模式分布、光谱分布的测量结果表明,在常规注氦方式下,在放电管末端引入一路氦气可以增加功率输出,拉长顺流增益区长度,加强高振动能级间的跃迁。经分析原因可能在于F原子壁面复合损失的减少、增益区流速的增加以及去激活效应的减弱。Output characteristics were tested under two diluent injecting methods on a single tube discharge excited infrared multi-band chemical laser by taking DF as a typical case. Experiment results of laser power output, mode characteristics, and spectra distributions indicated that injecting He from the end of discharge tube in addition to regular He injecting can increase the power of output, lengthen flow direction's gain length and strengthen the transitions between higher vibration levels, the reason was attributed to reduction of combination less of F atoms on wall, increase of active zone's flow rate and mitigation of deactivation effect.

关 键 词：红外 多波段 化学激光 稀释剂注入方式 

分 类 号：TN248.5[电子电信—物理电子学]