Super-flat coherent supercontinuum source in As38.8Se61.2 chalcogenide photonic crystal fiber with all-normal dispersion engineering at a very low input energy

被引：106
作者：
Diouf, Mbaye [1 ,2 ]
Ben Salem, Amine [1 ]
Cherif, Rim [1 ]
Saghaei, Hamed [3 ]
Wague, Ahmadou [2 ]
机构：
[1] Univ Carthage, Engn Sch Commun Tunis SupCom, GRESCOM Lab, Technopk, Ariana 2083, Tunisia
[2] Univ Cheikh Anta Diop, Dept Phys, Lab Atome Laser, Dakar, Senegal
[3] Islamic Azad Univ, Shahrekord Branch, Dept Elect Engn, Shahrekord, Iran
来源：
APPLIED OPTICS | 2017年 / 56卷 / 02期
关键词：
HIGH-QUALITY; WAVE-BREAKING; GENERATION; REGION; DESIGN;
D O I：
10.1364/AO.56.000163
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We numerically report super-flat coherent mid-infrared supercontinuum (MIR-SC) generation in a chalcogenide As38.8Se61.2 photonic crystal fiber (PCF). The dispersion and nonlinear parameters of As38.8Se61.2 chalcogenide PCFs by varying the diameter of the air holes are engineered to obtain all-normal dispersion (ANDi) with high nonlinearities. We show that launching low-energy 50 fs optical pulses with 0.88 kW peak power (corresponding to pulse energy of 0.05 nJ) at a central wavelength of 3.7 mu m into a 5 cm long ANDi-PCF generates a flat-top coherent MIR-SC spanning from 2900 to 4575 nm with a high spectral flatness of 3 dB. This ultra-wide and flattened spectrum has excellent stability and coherence properties that can be used for MIR applications such as medical diagnosis of diseases, atmospheric pollution monitoring, and drug detection. (C) 2017 Optical Society of America
引用
收藏
页码：163 / 169
页数：7
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