Gluth Alexander, Wang Yicheng, Petrov Valentin, Paajaste Jonna, Suomalainen Soile, Härkönen Antti, Guina Mircea, Steinmeyer Günter, Mateos Xavier, Veronesi Stefano, Tonelli Mauro, Li Jiang, Pan Yubai, Guo Jingkun, Griebner Uwe
Opt Express. 2015 Jan 26;23(2):1361-9. doi: 10.1364/OE.23.001361.
Tunable and mode-locked laser operation near 2 µm based on different Tm-doped YAG ceramics, 4 at.% and 10 at.%, is demonstrated. Several designs of GaSb-based surface-quantum-well SESAMs are characterized and studied as saturable absorbers for mode-locking. Best mode-locking performance was achieved using an antireflection-coated near-surface quantum-well SESAM, resulting in a pulse duration of ~3 ps and ~150 mW average output power at 89 MHz. All mode-locked Tm:YAG ceramic lasers operated at 2012 nm, with over 133 nm demonstrated tuning for continuous-wave operation.
展示了基于不同掺杂浓度（4 at.%和10 at.%）的掺铥钇铝石榴石（Tm:YAG）陶瓷在2μm附近的可调谐锁模激光运行。对几种基于锑化镓（GaSb）的表面量子阱半导体可饱和吸收镜（SESAMs）进行了表征和研究，用作锁模的饱和吸收体。使用抗反射涂层的近表面量子阱SESAM实现了最佳锁模性能，在89 MHz时脉冲持续时间约为3 ps，平均输出功率约为150 mW。所有锁模的Tm:YAG陶瓷激光器均在2012 nm波长运行，连续波运行的调谐范围超过133 nm。
