Super-flat coherent mid-infrared supercontinuum in all-normal dispersion As39Se61 chalcogenide photonic crystal fiber

被引：0
作者：
Yang, Xinyu [1 ]
Yang, Jian [2 ]
Xu, Qibo [1 ]
Yang, Hua [1 ]
机构：
[1] Hunan Univ, Coll Comp Sci & Elect Engn, Key Lab Micro, NanoOptoelect Devices Minist Educ, Changsha 410082, Peoples R China
[2] Hunan Univ Chinese Med, Changsha 410208, Peoples R China
来源：
PHYSICA SCRIPTA | 2023年 / 98卷 / 12期
基金：
中国国家自然科学基金;
关键词：
supercontinuum generation; mid-infrared; photonic crystal fiber; flat dispersion; MICROSTRUCTURED OPTICAL-FIBERS; BROAD-BAND; GENERATION; DESIGN; CORE;
D O I：
10.1088/1402-4896/ad0a2f
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We numerically demonstrated the generation of super-flat coherent mid-infrared supercontinuum in all-normal dispersion (ANDi) As39Se61 chalcogenide photonic crystal fiber (PCF). The PCF with flat-ANDi and high nonlinearities is obtained by optimizing the structural parameters of the fiber. When pumping a 50 fs pulse width and 6 kW peak power laser pulses at 3.35 mu m, under 3dB spectral flatness the super-flat coherent mid-infrared supercontinuum extended from 2.17 to 7.47 mu m is obtianed. Such coherent mid-infrared supercontinuum are enormously required for optical coherence tomography, biological imaging and frequency metrology.
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页数：9
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