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Room-temperature continuous-wave InP-based 2.01 μm microcavity lasers in whispering-gallery modes with InGaAsSb quantum well

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Chinese Optics Letters 2023年第4期21卷 65-68页

作者：郭强强张锦川朱怡璇高旭陆全勇卓宁翟慎强刘俊岐王利军刘舒曼刘峰奇 Key Laboratory of Semiconductor Materials Science Institute of SemiconductorsChinese Academy of SciencesBeijing Key Laboratory of Low Dimensional Semiconductor Materials and DevicesBeijing 100083China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Division of Quantum Materials and Devices Beijing Academy of Quantum Information SciencesBeijing 100193China

We demonstrated an electrically pumped InP-based microcavity laser operating in continuous-wave *** active region is designed with antimony surfactants to enhance the gain at 2 μm,and a selective electrical isolation scheme is used to secure continuous-wave operation for the microcavity laser at room *** lasers were fabricated as a notched elliptical resonator,resulting in a highly unidirectional far-field profile with an in-plane beam divergence of less than 2°.Single-mode emission was obtained over the entire dynamic range,and the laser frequencies were tuned linearly with the pumping ***,these directional lasers pave the way for portable and highly integrated on-chip sensing applications.

关键词： whispering-gallery mode continuous-wave operation electrical isolation directional emission

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LLC Resonant Converter Topologies and Industrial Applications-A Review

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Chinese Journal of electrical Engineering 2020年第3期6卷 73-84页

作者： Junming Zeng Guidong Zhang Samson Shenglong Yu Bo Zhang Yun Zhang School of Automation Guangdong University of TechnologyGuangzhou 510600China School of Engineering Deakin UniversityVictoria 3216Australia School of Electric Power South China University of TechnologyGuangzhou 510640China

Owing to the advantages of high efficiency,high energy density,electrical isolation,low electromagnetic interference(EMI)and harmonic pollution,magnetic integration,wide output ranges,low voltage stress,and high operation frequency,the LLC resonant converters are widely used in various sectors of the electronics-based *** history and development of the LLC resonant converters are presented,their advantages are analyzed,three of the most popular LLC resonant converter topologies with detailed assessments of their strengths and drawbacks are ***,an important piece of research on the industrial applications of the LLC resonant converters is conducted,mainly including electric vehicle(EV)charging,photovoltaic systems,and light emitting diode(LED)lighting drivers and liquid crystal display(LCD)TV power ***,the future evolution of the LLC resonant converter technology is discussed.

关键词： electrical isolation high energy density LLC resonant converter zero-current switching(ZCS)turn-off zero-voltage switching(ZVS)turn-on

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