摘要
采用一种具有双零色散点的三角形纤芯硅单质光子晶体光纤作为中红外超连续谱激光的非线性工作介质,利用峰值功率为1500 W、脉冲宽度为100 fs、波长范围为2.6~2.9μm的泵浦光激发长度为0.1 m的光子晶体光纤,获得覆盖2~7μm波段的中红外超连续谱。通过改变泵浦光波长实现了谱峰增益补偿,扩大了对气体检测特征波长的光谱覆盖范围。这种谱峰增益补偿的中红外超连续谱可用于实时检测多种温室气体、有毒气体和易燃易爆气体。
A triangular core silicon photonic crystal fiber with double zero-dispersion points is used as the nonlinear working medium of a mid-infrared supercontinuum laser.The pumped optical fiber,with a peak power of 1500 W,pulse width of 100 fs,and wavelength range of 2.6-2.9μm,is used to excite photonic crystal fiber with length of 0.1 m.A midinfrared supercontinuum covering the 2-7μm wavelength range is obtained.The spectral peak gain compensation is realized by varying the pump wavelength,and the spectral coverage of the characteristic wavelength of the detected gas is expanded.This mid-infrared supercontinuum with spectral peak gain compensation can be used to detect various greenhouse,toxic,and flammable and explosive gases in real time.
作者
高磊
闫宇
李嘉敏
肖连团
Gao Lei;Yan Yu;Li Jiamin;Xiao Liantuan(College of Physics,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;College of Electronic Information and Optical Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;Key Laboratory of Advanced Transducers and Intelligent Control System,Ministry of Education,Taiyuan 030024,Shanxi,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2024年第17期244-250,共7页
Laser & Optoelectronics Progress
基金
国家自然科学基金(62127817,6191101445,62305240)
山西省自然科学基金(202203021222104)。
关键词
中红外波段
超连续谱
光子晶体光纤
硅单质
增益补偿
midinfrared band
supercontinuum
photonic crystal fiber
silicon
gain compensation
