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Single-Photon Scattering by a Three-level System Interacting with a Whispering-Gallery Resonator Coupled to One-Dimensional Waveguide:
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作者 CHENG Mu-Tian SONG Yan-Yan LUO Ya-Qin ZHAO Guang-Xing 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第3期501-505,共5页
We investigate theoretically the single-photon scattering by a A-type three-level system interacting with a whispering-gallery-type resonator which is coupled to a one-dimensional waveguide by full quantum-mechanical ... We investigate theoretically the single-photon scattering by a A-type three-level system interacting with a whispering-gallery-type resonator which is coupled to a one-dimensional waveguide by full quantum-mechanical approach. The single-photon transmission amplitude and reflection amplitude are obtained exactly via real-space approach. The single-photon transport properties controlling by classic optical field are discussed. The critical coupling condition in the coupled waveguide-whispering-gallery resonator-atom with three-level system is also analyzed. 展开更多
关键词 one-dimensional waveguide whispering gallery resonator SCATTERING single photon A-type threelevel
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基于Push-Pull调制的分布反馈激光器带宽研究
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作者 周宁 左成亮 +4 位作者 林泽锟 兰明文 董智星 柯程 齐俊秋 《激光与光电子学进展》 CSCD 北大核心 2018年第6期287-294,共8页
为提高分布式反馈(DFB)激光器小信号曲线的通带平坦度和3dB带宽,利用一维行波模型,研究了一阶和二阶光栅结构下基于push-pull调制原理的DFB激光器,分析了器件参数(如光栅耦合系数、腔长、电极比例等)与激光器频率响应的关系。其中,仿真... 为提高分布式反馈(DFB)激光器小信号曲线的通带平坦度和3dB带宽,利用一维行波模型,研究了一阶和二阶光栅结构下基于push-pull调制原理的DFB激光器,分析了器件参数(如光栅耦合系数、腔长、电极比例等)与激光器频率响应的关系。其中,仿真模型所用的参数是与实际器件的光电特性对照后提取出来的参数。仿真结果表明:对于一阶光栅结构的DFB激光器,在合适的光栅耦合系数、腔长和电极比例下,push-pull调制的带宽比单电极直接调制的带宽大12GHz;对于二阶光栅结构的DFB激光器,在合适的参数下,push-pull调制的带宽比单电极直接调制的带宽大40GHz;并且,一阶和二阶光栅结构的push-pull调制激光器的通带平坦度都优于普通的直接调制激光器。同时,实验结果也表明,即使对于普通的有源区设计,采用push-pull调制技术后,其带宽也会大幅提升。 展开更多
关键词 激光器 带宽 push—pull 光子-光子谐振
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Interconversion of photon-phonon in a silica optomechanical microresonator 被引量:3
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作者 DONG ChunHua SHEN Zhen +1 位作者 ZOU ChangLing GUO GuangCan 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2015年第5期64-69,共6页
In an optomechanical resonator, the optical and mechanical excitations can be coherently converted, which induces a transparency window for a weak probe laser beam. Here, we report an experimental study of transient o... In an optomechanical resonator, the optical and mechanical excitations can be coherently converted, which induces a transparency window for a weak probe laser beam. Here, we report an experimental study of transient optomechanically induced transparency(OMIT) using the silica microsphere with the breathing modes. The transient OMIT behavior obtained are in good agreement with theoretical calculations. In addition, the coherent interconversion between optical and mechanical excitations that can be used for light storage and readout has also been studied here. Our experimental results indicate that the light storage is closely related to the process of OMIT, and the photon-phonon conversion can be further applied to optical wavelength or optical mode conversion. 展开更多
关键词 cavity optomechanics optomechanically induced transparency MICROSPHERE
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