Broadband atomic-layer MoS2 optical modulators for ultrafast pulse generations in the visible range.
Broadband atomic-layer MoS2 optical modulators for ultrafast pulse generations in the visible range.
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DOI：
10.1364/ol.42.000547
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发表时间：
2017-02
期刊：
影响因子：
3.6
通讯作者：
Yuxia Zhang;Haohai Yu;Rui Zhang;G. Zhao;Huaijin Zhang;Yanxue Chen;L. Mei;M. Tonelli;Ji-yang Wa
中科院分区：
文献类型：
--
作者：
Yuxia Zhang;Haohai Yu;Rui Zhang;G. Zhao;Huaijin Zhang;Yanxue Chen;L. Mei;M. Tonelli;Ji-yang Wa
可见激光是一个令人着迷的领域，2014 年诺贝尔物理和化学奖说明了其重要性。随着蓝色激光二极管（LD）的发展，LD泵浦固态可见激光器成为当今的一个新兴方向。受限于可见光调制器稀缺，固态超快可见光激光器很少实现。基于原子层MoS2的带隙结构和光电特性，可以认为MoS2具有作为可见光调制器的潜力。在这里，通过最初揭示可见光范围内原子层 MoS2 的层相关非线性吸收，根据新型二维 (2D) 光调制器的拟议设计标准，开发和选择了用于可见光超快脉冲生成的宽带原子层 MoS2 光调制器。通过将选定的MoS2光调制器应用在固态镨激光器中，初步实现了522至639 nm的宽带锁模超快激光器。我们相信这封信应该会促进可见光超快光子学的发展和二维光电材料的进一步应用。
Visible lasers are a fascinating regime, and their significance is illustrated by the 2014 Noble prizes in physics and chemistry. With the development of blue laser diodes (LDs), the LD-pumped solid-state visible lasers become a burgeoning direction today. Constrained by the scarce visible optical modulators, the solid-state ultrafast visible lasers are rarely realized. Based on the bandgap structure and optoelectronic properties of atomic-layer MoS2, it can be proposed that MoS2 has the potential as a visible optical modulator. Here, by originally revealing layer-dependent nonlinear absorption of the atomic-layer MoS2 in the visible range, broadband atomic-layer MoS2 optical modulators for the visible ultrafast pulse generation are developed and selected based on the proposed design criteria for novel two-dimensional (2D) optical modulators. By applying the selected MoS2 optical modulators in the solid-state praseodymium lasers, broadband mode-locked ultrafast lasers from 522 to 639 nm are originally realized. We believe that this Letter should promote the development of visible ultrafast photonics and further applications of 2D optoelectronic materials.