Feng T L, Zhao S Z, Yang K J, Li G Q, Li D C, Zhao J, Qiao W C, Hou J, Yang Y, He J L, Zheng L H, Wang Q G, Xu X D, Su L B, Xu J
Opt Express. 2013 Oct 21;21(21):24665-73. doi: 10.1364/OE.21.024665.
We have investigated the lasing characteristics of Tm:LSO crystal in three operation regimes: continuous wave (CW), wavelength tunable and passive Q-switching based on graphene. In CW regime, a maximum output power of 0.65 W at 2054.9 nm with a slope efficiency of 21% was achieved. With a quartz plate, a broad wavelength tunable range of 145 nm was obtained, corresponding to a FWHM of 100 nm. By using a graphene saturable absorber mirror, the passively Q-switched Tm:LSO laser produced pulses with duration of 7.8 μs at 2030.8 nm under a repetition rate of 7.6 kHz, corresponding to pulse energy of 14.0 μJ.
我们研究了Tm:LSO晶体在三种工作模式下的激光特性：连续波（CW）、基于石墨烯的波长可调谐和被动调Q。在连续波模式下，在2054.9 nm处实现了0.65 W的最大输出功率，斜率效率为21%。使用石英板，获得了145 nm的宽波长可调谐范围，对应于100 nm的半高宽。通过使用石墨烯可饱和吸收镜，被动调Q的Tm:LSO激光器在7.6 kHz的重复频率下，在2030.8 nm处产生了持续时间为7.8 μs的脉冲，对应脉冲能量为14.0 μJ。
