Development of ultra-octave coherent light source

本项目利用玻璃中非线性系数最高的硫系玻璃和在紫外-中红外波段具有高透明度的氟化物玻璃，研究了覆盖可见-中红外波段的超连续谱光。阐明了控制硫系光纤色散的复合微结构。我们阐明了这些玻璃的拉曼响应，并利用非线性薛定谔方程分析了微结构光纤中超连续谱的产生。获得了0.35μm ~ 6.2μm的超连续谱。基于这些实验和理论结果，我们阐明了我们研制的硫系复合微结构光纤可以产生从可见光到中红外的超连续谱光。

We studied the supercontinuum light covering the visible to mid-infrared wavelength region using chalcogenide glasses with highest nonlinearity among the glasses and fluoride glasses with high transparency from the ultra-violet to mid-infrared region in this project. We clarified the composite microstructure which can control the chromatic dispersion of chalcogenide fibers. We have clarified the Raman response of these glasses and analyzed supercontinuum generation in the micro-structured fibers using non-linear Schrodinger equation. We obtained the widest supercontinuum light from 0.35μm to 6.2μm. Based on these experimental and theoretical results, we clarified that chalcogenide composite microstructured fiber we developed can generate the supercontinuum light from the visible to mid-infrared region.