Song Yufeng, You Kaixi, Zhao Jinlai, Huang Dazhou, Chen Yunxiang, Xing Chenyang, Zhang Han
Shenzhen Engineering Laboratory of phosphorene and Optoelectronics, International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
Nanoscale. 2020 Jul 23;12(28):15252-15260. doi: 10.1039/d0nr02548h.
In this work, ultrafast fiber lasers based on 2D selenium-coated tellurium nanosheets in the infrared band are reported. 2D selenium-coated tellurium as a mode locker is shown with broadband saturable absorption and is capable of supporting ultra-stable pulse trains with several hundred-femtosecond pulse widths in the laser cavity. In particular, the as-fabricated 2D selenium-coated tellurium based fiber laser source operating in the communication band (1.5 μm) exhibits the vector pulse property, which supports the study of the vector soliton in ultrafast fiber lasers. The pulse duration of vector solitons is as short as 800 fs. The 2D selenium-coated tellurium is also available for a mode locked fiber laser operating at 1 μm. The laser oscillator has a pulse duration of several picoseconds and the pulse train is ultra-stable after an amplification to 100 mW, which is a promising seed source in the chirped-pulse amplification system in the future.
在这项工作中，报道了基于二维硒包覆碲纳米片的红外波段超快光纤激光器。二维硒包覆碲作为一种锁模器，具有宽带饱和吸收特性，能够在激光腔内支持具有数百飞秒脉冲宽度的超稳定脉冲序列。特别地，所制备的工作在通信波段（1.5μm）的基于二维硒包覆碲的光纤激光源呈现出矢量脉冲特性，这为超快光纤激光器中矢量孤子的研究提供了支持。矢量孤子的脉冲持续时间短至800飞秒。二维硒包覆碲也可用于工作在1μm的锁模光纤激光器。该激光振荡器的脉冲持续时间为几皮秒，在放大到100mW后脉冲序列超稳定，这是未来啁啾脉冲放大系统中一种很有前景的种子源。
