基于夹层氮化硅波导的可见-中红外超连续谱特性研究OA北大核心CSTPCD
Characterization of visible-mid-infrared supercontinuum spectrum based on sandwiched silicon nitride waveguide
提出一种较小厚度氮化硅-蓝宝石-氮化硅夹层波导结构.利用其色散波辐射现象和中红外相位匹配条件,结合波导脉冲传输模型,讨论了夹层波导不同物理尺寸对相位匹配点和光谱展宽的影响,通过数值模拟获得了0.5～4 μm的超连续谱展宽,并且在-40 dB水平下具有更远中红外色散波产生.通过该模型,详细解释了非线性波导脉冲传输的潜在机制.理论模型分析表明,通过优化氮化硅及蓝宝石夹层的物理尺寸,改变相位匹配条件,进而可以在较宽的波长范围内控制色散波的位置.
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.
孙嘉浩;程如敏;郭凯;尹金德;卿笃安;李玲;闫培光
深圳大学物理与光电工程学院 深圳市激光工程重点实验室,广东 深圳 518060军事科学院系统工程研究院,北京 100141深圳市诺安智能股份有限公司,广东 深圳 518107
电子信息工程
非线性光学超连续谱中红外色散工程氮化硅
nonlinear opticssupercontinuum spectrummid-infrareddispersion engineeringsilicon nitride
《红外与毫米波学报》 2024 (003)
295-301 / 7
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)
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