Passively mode-locked erbium-doped fiber laser by a Mo2TiC2 MXene saturable absorber

被引：3
作者：
Lee K. [1 ]
Choi J. [1 ]
Kwon S.-Y. [1 ]
Kim J. [1 ]
Woo T. [1 ]
Ryu J. [1 ]
Jung J. [1 ]
Lee J.H. [1 ]
机构：
[1] School of Electrical and Computer Engineering, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul
来源：
Optik | 2023年 / 295卷
基金：
新加坡国家研究基金会;
关键词：
Mo2TiC2; MXene; Mode-locked fiber laser; Saturable absorber;
D O I：
10.1016/j.ijleo.2023.171531
中图分类号：
学科分类号：
摘要：
Mono- and few-layer MXenes have gained widespread use as a nonlinear material platform for saturable absorbers (SAs) when generating ultrafast mode-locked pulses. However, the manufacturing processes associated with these materials are intricate and require considerable expertise. Consequently, it would be intriguing to investigate whether bulk and/or nanoscale-layered MXenes can be used as a nonlinear optical material platform. In this study, we experimentally demonstrated a Mo2TiC2 MXene-based SA by depositing nanoscale-layered Mo2TiC2 MXene particles and a polyvinyl alcohol composite film onto a side-polished fiber device. The fabricated SA exhibited a modulation depth of 5.67% and a saturation intensity of 0.135 MW/cm2. By integrating the Mo2TiC2 MXene-based SA within an erbium-doped fiber ring cavity, we generated mode-locked pulses featuring a pulse width of 1.74 ps at a wavelength of 1557.9 nm. This investigation highlights the potential of nanoscale-layered Mo2TiC2 MXene to function as an efficient material platform for nonlinear photonics applications. © 2023 Elsevier GmbH
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