基于石墨烯/WS_(2)可饱和吸收体的中红外Er^(3+):ZBLAN锁模激光器及其波长可调谐性能  

Mid Infrared Er^(3+):ZBLAN Mode-locked Laser and Wavelength Tunable Performance Based on Graphene/WS_(2) Saturated Absorber

作　　者：刘永岩 杨雪莹 田颖 蔡恩林 李兵朋 张军杰 黄飞飞 LIU Yongyan;YANG Xueying;TIAN Ying;CAI Enlin;LI Bingpeng;ZHANG Junjie;HUANG Feifei(Institute of Optoelectronic Materials and Devices,Hangzhou College of Optics and Electronic Technology,China Jiliang University,Hangzhou 310018,China;Shanghai Institute of Applied Physics,Chinese Academy of Sciences,Shanghai 201800,China;Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201210,China;University of Chinese Academy of Sciences,Beijing 101408,China)

机构地区：[1]中国计量大学光学与电子科技学院,光电材料与器件研究院,浙江杭州310018 [2]中国科学院上海应用物理研究所,上海201800 [3]中国科学院上海高等研究院,上海201210 [4]中国科学院大学,北京101408

出　　处：《发光学报》2024年第8期1354-1363,共10页Chinese Journal of Luminescence

基　　金：浙江省自然科学基金(LZ21F050002,LZ22E020001);国家自然科学基金(62374153,62075204,U190920054);浙江省“高层次人才特殊支持计划”(2021R52032);浙江省高校基本科研业务费(2023YW93)。

摘　　要：石墨烯与过渡金属硫化物WS_(2)具有稳定的化学性质和宽带吸收光谱,可以实现中红外波段激光的脉冲运转。本文报道了石墨烯/WS_(2)作为可饱和吸收体在中红外波段锁模激光器中的应用,实验证明石墨烯/WS_(2)复合材料具有更好的非线性吸收特性,锁模调制时表现出低的锁模阈值和高的材料损伤阈值。当泵浦功率为5 W时,激光器在2781.7 nm处得到了脉冲宽度为24.04 ps的锁模脉冲,激光器的最大平均输出功率为237.7 mW,峰值功率为395.5 W。最后,通过光栅实现了激光器的波长可调谐输出,将石墨烯/WS_(2)锁模激光器的输出波长范围拓宽为2730~2810 nm。Graphene and transition metal sulfide WS_(2) have stable chemical properties and broadband absorption spectra,which can realize the pulse operation of laser in the mid-infrared band.This paper reports the application of graphene and WS_(2) as saturable absorbers in mode-locked lasers in mid-infrared band.Experiments show that graphene/WS_(2) composites have better nonlinear absorption characteristics,and exhibit low mode-locked threshold and high material damage threshold during mode-locked modulation.When the pump power is 5 W,The mode-locked pulse with pulse width of 24.04 ps was obtained at 2781.7 nm.The maximum average output power of the laser was 237.7 mW and the peak power was 395.5 W.Finally,the wavelength tunable output of the laser is realized by grating,and the output wavelength of the graphene/WS_(2) mode-locked laser is widened to 2730-2810 nm.

关 键 词：中红外激光 锁模 波长可调谐 石墨烯 WS2 

分 类 号：TN248[电子电信—物理电子学]