蓝光激光二极管直接泵浦的自启动皮秒钛宝石激光器(特邀)

Self-starting Mode-locked Picosecond Ti:sapphire Laser Directly Pumped by Blue Laser Diodes(Invited)

介绍了一款465 nm蓝光激光二极管泵浦的自启动皮秒钛宝石激光器。该激光器采用双侧泵浦结构,弥补了模式匹配的不足,充分利用了低掺杂浓度、长通光长度的钛宝石晶体,当泵浦功率为7 W时,获得了718 mW的连续光输出,且未观测到明显的泵浦诱导损耗现象。在SESAM的辅助下,获得371 mW、6 ps的可自启动的被动锁模输出,而且10 h内输出功率的RMS值小于0.5%。

A self-starting picosecond Ti:sapphire laser pumped by 465 nm blue laser diodes is introduced. A double-side pumping structure is adopted in the laser, which makes up for the lack of mode matching and makes full use of the Ti:sapphire crystal with low doping concentration and long optical length. When the pump power is7 W, a continuous wave output power of 718 mW is achieved and no obvious pump-induced loss phenomenon is observed. With the assistance of semiconductor saturable absorber mirror(SESAM), the self-starting passive modelocking output of 371 mW and 6 ps is obtained, and the RMS value of the output power is less than 0.5% within 10hours.