Nonlinear optical response of niobium telluride and its application for demonstrating pulsed fiber lasers  

作　　者：Xinxin Shang Yule Zhang Tuo Li Huanian Zhang Xiaofeng Zou S.Wageh Ahmed A.Al-Ghamdi Han Zhang Shuhao Si Dengwang Li 

机构地区：[1]Shandong Province Key Laboratory of Medical Physics and Image Processing Technology,Shandong Provincial Key Laboratory of Optics and Photonic Device,School of Physics and Electronics,Shandong Normal University,Jinan,250014,China [2]Institute of Microscale Optoelectronics,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen,518060,China [3]Shandong Yunhai Guochuang Cloud Computing Equipment Industry Innovation Co.,Ltd.,Jinan,Shandong,China [4]School of Physics and Optoelectronic Engineering,Shandong University of Technology,Zibo,255049,China [5]Department of Physics,Faculty of Science,King Abdulaziz University,Jeddah,21589,Saudi Arabia

出　　处：《Journal of Materiomics》2024年第2期355-365,共11页无机材料学学报（英文）

基　　金：National Natural Science Foundation of China(Grant nos.61971271,11904213,62271294);the Jinan City-School Integration Development Strategy Project(JNSX2021023);the Major Program of Shandong Province Natural Science Foundation(ZR2022ZD16);the Shandong Province Major Technological Innovation Project(2022CXGC010502,2022CXGC020507,2022CXGC020505);the Key Project of Department of Education of Guangdong Province(Grant no.2018KCXTD026);the Deanship of Scientific Research(DSR)at King Abdulaziz University,Jeddah(Grant no:KEP-MSc-70-130-42),supported by“Opening Foundation of Shandong Provincial Key Laboratory of Laser Technology and Application”.

摘　　要：Niobium telluride(NbTe_(2)),a kind of few-layer two-dimensional(2D)transition metal dichalcogenides(TMDs)material,has been theoretically predicted with nonlinear absorption properties and excellent optical response.Herein,we experimentally demonstrated an Er-doped fiber(EDF)laser based NbTe_(2)as saturable absorber(SA).Few-layer NbTe_(2)nanosheets were successfully prepared by adopting the commonly used liquid-phase exfoliation(LPE)method.The nonlinear optical response of highly stable few-layer NbTe_(2)was investigated through an open-aperture Z-scan laser measurement,the nonlinear absorption coefficient was 2.45×10^(-11)m/W.Both Q-switched and mode-locked operation centered at 1559 nm were recorded based on NbTe_(2)SA.The pulse duration was varied from 4.88 ms to 1.75 ms,and the adjustable range of repetition frequency is changed from 44.01 kHz to 64.12 kHz in passively Q-switched operation.Furthermore,a constant repetition rate of 5.33 MHz and pulse width of 2.67 ps were observed in mode-locked operation.Our experimental results fully reveal the nonlinear optical prop-erties of NbTe_(2)used in pulsed fiber lasers and broaden its ultrafast applications in the optics field.

关 键 词：Niobium telluride Saturable absorber Z-SCAN Mode-locked pulse Fiber laser 

分 类 号：TN248[电子电信—物理电子学]