摘要
钛宝石(Ti:Al_2O_3被非稳望远镜腔的调Q倍频Nd:YAG激光器泵浦,在限制能量的条件下,得到了基横模的输出,在保持基模情况下,抖效率25%,总转换效率达17%。对同一付腔镜,波长调节范围在760nm~830nm之间。非稳腔泵浦体积大于模体积,望远镜光路系统的近衍射输出光束在Brester窗上损耗较小,因而斜效率随泵浦能量增大而增加,由于布儒斯特窗和色散棱镜的象散作用,基模光斑为椭圆。可调谐钛宝石激光器光腔的象散公式已得到。除此而外,还发现巨脉冲泵浦可能有强烈的热透镜效应。
Ti:sapphire pumped by an unstable telescoplc cavity,Qswitch and frequency-doublingN d:YAG latser produces a fundamental output, uhder restricting pumping energy per pulse. Thes lopo coefficient is 25%and the total transform coefficient is 1 7%,The tunable range of wave-len8th is measured being between 760 nm and 830 nm. The astigmetism of Bresteer window of Ti :A1_2O_3 active medium and the dispersion prism in the resonant cavity has been calculated, probablvthe temporal thermal lens effect of Ti:sapphire is discovered.
出处
《重庆师范学院学报(自然科学版)》
1994年第4期1-8,共8页
Journal of Chongqing Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目
关键词
可调谐激光器
非稳腔
基横模
钛宝石激光器
tunable laser, Ti : sapphire,unstable cavitv Nd: YAG laser,fundamental transversemde,astigmetic ray