Mode-locked thulium fiber laser with MoS2
Mode-locked thulium fiber laser with MoS2
复制标题
MoS2 锁模铥光纤激光器
DOI：
10.1088/1612-2011/12/6/065104
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发表时间：
2015-06-01
影响因子：
1.7
通讯作者：
Tang, Yulong
中科院分区：
文献类型：
--
作者：
Tian, Zhen;Wu, Kan;Tang, Yulong
将液相剥离的二维材料多层二硫化钼转移到金镜上，实验观察了其在2 μ m波长区域的饱和吸收。该转移的二硫化钼饱和吸收剂的调制深度为13.6%，饱和强度为23.1 MW cm（-2）。将该可饱和吸收器集成到线性Tm3+光纤激光腔中，在2 μ m处实现稳定的基频锁模操作，脉冲能量为15.5 nJ，脉宽为843 ps，重复频率为9.67 MHz。激光的光谱宽度为17.3 nm，中心波长为1905 nm。这是第一次在2 μ m波长区域使用多层MoS2片进行锁模，验证了多层MoS2是与石墨烯相当的宽带锁模的良好候选者，也是实现高脉冲能量的良好锁模器。
Liquid-phase exfoliated 2D material multilayer MoS2 is transferred onto a gold mirror and its saturable absorption at the 2 mu m wavelength region is experimentally observed. This transferred MoS2 saturable absorber has a modulation depth of 13.6% and a saturation intensity of 23.1 MW cm(-2). This saturable absorber is integrated into a linear Tm3+ fiber laser cavity, and stable fundamental-frequency mode-locking operation is realized at 2 mu m with pulse energy of 15.5 nJ, pulse width of similar to 843 ps, and a repetition rate of 9.67 MHz. The laser spectral width is similar to 17.3 nm with a center wavelength of 1905 nm. This first presence of mode-locking with multilayer MoS2 sheets in the 2 mu m wavelength region verifies that multilayer MoS2 is a good candidate for broadband mode-locking comparable to graphene, as well as a good mode-locker for achieving high pulse energy.