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首页> 外文期刊>Applied optics >Ultra broadband mid-IR supercontinuum generation in Ge11.5As24Se64.5 based chalcogenide graded-index photonic crystal fiber: design and analysis
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Ultra broadband mid-IR supercontinuum generation in Ge11.5As24Se64.5 based chalcogenide graded-index photonic crystal fiber: design and analysis

机译:基于Ge11.5As24Se64.5的硫族化物渐变折射率光子晶体光纤的超宽带中红外超连续谱产生:设计与分析

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摘要

In this paper, we report design and numerical analysis of a Ge11.5As24Se64.5 based chalcogenide glass graded-index photonic crystal fiber structure for mid-IR ultra broadband supercontinuum generation. The proposed dispersion engineered photonic crystal fiber offers a zero dispersion wavelength at a pump wavelength of 2.8 mu m. To simulate the supercontinuum generation spectrum, the orders of dispersion coefficient up to the ninth order are considered. Simulated results indicate that an ultra broadband supercontinuum spectrum spanning 1-16 mu m has been achieved using a 10 mm long photonic crystal fiber structure pumped with 50 fs secant hyperbolic pulses of 3 kW at a -30 dB spectral intensity level. To the best of our knowledge, this is the first time such broad supercontinuum spectrum has been reported. This ultra broadband mid-IR supercontinuum spectrum is applicable in many diverse fields, including medical, defense, metrology, and spectroscopy. (C) 2016 Optical Society of America
机译:在本文中,我们报告了基于Ge11.5As24Se64.5的硫族化物玻璃渐变折射率光子晶体光纤结构的设计和数值分析,用于中红外超宽带超连续谱的产生。提出的色散工程光子晶体光纤在2.8微米的泵浦波长下提供零色散波长。为了模拟超连续谱产生谱,考虑了色散系数直至第九阶的阶数。模拟结果表明,使用10毫米长的光子晶体光纤结构在-30 dB频谱强度水平下泵浦了3 kW的50 fs割线双曲线双脉冲,可以实现1-16μm的超宽带超连续谱。据我们所知,这是首次报道如此广泛的超连续谱。这种超宽带中红外超连续谱适用于许多不同领域,包括医疗,国防,计量学和光谱学。 (C)2016美国眼镜学会

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