红外与毫米波学报2024，Vol.43Issue(3)：295-301,7.DOI:10.11972/j.issn.1001-9014.2024.03.001
基于夹层氮化硅波导的可见-中红外超连续谱特性研究
Characterization of visible-mid-infrared supercontinuum spectrum based on sandwiched silicon nitride waveguide
摘要
Abstract
This paper introduces a low-thickness sandwich waveguide structure comprising silicon nitride-sapphire-sili-con nitride layers.By exploiting its dispersion wave radiation effect and mid-infrared phase matching condition,com-bined with the waveguide pulse transmission model,this study examines the impact of different physical sizes of the sandwich waveguide on the phase matching point and spectral broadening.Through numerical simulation,a supercon-tinuum spectrum ranging from 0.5-4 μm is generated,producing a farther mid-infrared dispersion wave at a-40 dB lev-el.Moreover,this model provides an in-depth mechanism for nonlinear waveguide pulse transmission.Theoretical anal-ysis reveals that modifying the physical size of the silicon nitride and sapphire interlayer and altering the phase-matching conditions can regulate the position of the dispersion wave across a broader wavelength range.关键词
非线性光学/超连续谱/中红外/色散工程/氮化硅Key words
nonlinear optics/supercontinuum spectrum/mid-infrared/dispersion engineering/silicon nitride分类
信息技术与安全科学引用本文复制引用
孙嘉浩,程如敏,郭凯,尹金德,卿笃安,李玲,闫培光..基于夹层氮化硅波导的可见-中红外超连续谱特性研究[J].红外与毫米波学报,2024,43(3):295-301,7.基金项目
国家自然科学基金(12074264),深圳市科技计划项目(JCYJ20220818095604010) Supported by the National Natural Science Foundation of China(12074264),Shenzhen Science and Technology Program(JCYJ20220818095604010) （12074264）
