用于产生被动锁模和调Q超快光纤激光器的二硫化钛基可饱和吸收体

Titanium Disulfide Based Saturable Absorber for Generating Passively Mode-Locked and Q-Switched Ultra-Fast Fiber Lasers.

作者信息

Shang Xin-Xin, Guo Lin-Guang, Zhang Hua-Nian, Li Deng-Wang, Yue Qing-Yang

机构信息

Shandong Provincial Engineering and Technical Center of Light Manipulations, Shandong Provincial Key Laboratory of Optics and Photonic Devices and Shandong Key Laboratory of Medical Physics and Image Processing, School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.

School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo 255049, China.

出版信息

Nanomaterials (Basel). 2020 Sep 26;10(10):1922. doi: 10.3390/nano10101922.

DOI:10.3390/nano10101922

PMID:32993059

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7601229/

Abstract

In our work, passively mode-locked and Q-switched Er-doped fiber lasers (EDFLs) based on titanium disulfide (TiS) as a saturable absorber (SA) were generated successfully. Stable mode-locked pulses centred at 1531.69 nm with the minimum pulse width of 2.36 ps were obtained. By reducing the length of the laser cavity and optimizing the cavity loss, Q-switched operation with a maximum pulse energy of 67.2 nJ and a minimum pulse duration of 2.34 µs was also obtained. Its repetition rate monotonically increased from 13.17 kHz to 48.45 kHz with about a 35 kHz tuning range. Our experiment results fully indicate that TiS exhibits excellent nonlinear absorption performance and significant potential in acting as ultra-fast photonics devices.

摘要

在我们的工作中，成功制备了基于二硫化钛（TiS）作为可饱和吸收体（SA）的被动锁模和调Q掺铒光纤激光器（EDFL）。获得了中心波长为1531.69 nm、最小脉宽为2.36 ps的稳定锁模脉冲。通过缩短激光腔长度并优化腔损耗，还实现了调Q运转，最大脉冲能量为67.2 nJ，最小脉冲持续时间为2.34 µs。其重复频率从13.17 kHz单调增加到48.45 kHz，调谐范围约为35 kHz。我们的实验结果充分表明，TiS在用作超快光子学器件方面表现出优异的非线性吸收性能和巨大潜力。