We report on the first demonstration of a diode-pumped passively mode-locked Tm,Ho:LiYF4 laser. Stable continuous-wave mode-locking is achieved by employing a single-layer graphene as a saturable absorber (SA). For a reflection-type graphene-SA, the laser delivers 5.2 ps pulses at ~2051 nm with an average output power of 40 mW at a repetition rate of 89.86 MHz. With a transmission-type graphene-SA and smaller output coupling, the output power is scaled up to 80 mW while the laser operated in a double-pulse regime.

中文翻译：

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被动锁模二极管泵浦 Tm,Ho:LiYF4 激光器

我们报告了二极管泵浦被动锁模 Tm,Ho:LiYF4 激光器的首次演示。通过采用单层石墨烯作为可饱和吸收体 (SA) 来实现稳定的连续波锁模。对于反射型石墨烯-SA，激光器在 ~2051 nm 处提供 5.2 ps 脉冲，平均输出功率为 40 mW，重复频率为 89.86 MHz。使用传输型石墨烯-SA 和较小的输出耦合，当激光器在双脉冲状态下工作时，输出功率可放大至 80 mW。