期刊
OPTICS EXPRESS
卷 24, 期 2, 页码 749-758出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.24.000749
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资金
- Innovation Fund Denmark, project Light Food [132-2012-3]
- European Commission [317803]
Supercontinuum generation in chalcogenide fibers is a promising technology for broadband spatially coherent sources in the mid-infrared, but it suffers from discouraging commercial prospects, mainly due to a lack of suitable pump lasers. Here, a promising approach is experimentally demonstrated using an amplified 1.55 mu m diode laser to generate a pump continuum up to 4.4 mu m in cascaded silica and fluoride fibers. We present experimental evidence and numerical simulations confirming that the spectral-temporal composition of the pump continuum is critical for continued broadening in a chalcogenide fiber. The fundamental physical question is concerned with the long-wavelength components of the pump spectrum, which may consist of either solitons or dispersive waves. In demonstrating this we present a commercially viable fiber-cascading configuration to generate a mid-infrared supercontinuum up to 7 mu m in commercial chalcogenide fibers. (C) 2016 Optical Society of America
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