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Gain lifetime characterization through time-resolved stimulated emission in a whispering-gallery mode microresonator

  • 作者:
    Liu, XiaoFei[4,5] Lei, Fuchuan[7] Wang, TieJun(王铁军)[4,5] Long, GuiLu[1,2,3] Wang, Chuan(王川)[4,5,6]
  • 地址:

    [1]Tsinghua Univ, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China;

    [2]Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China;

    [3]Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China;

    [4]Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China;

    [5]Beijing Univ Posts & Telecommun, Sch Sci, Beijing 100876, Peoples R China;

    [6]Beijing Normal Univ, Coll Informat Sci & Technol, Beijing 100875, Peoples R China;

    [7]Grad Univ, Okinawa Inst Sci & Technol, Light Matter Interact Unit, Onna, Okinawa 9040495, Japan

  • 语种:
    英文
  • 期刊:
    NANOPHOTONICS ISSN:2192-8606 2019 年 8 卷 1 期 (127 - 134) ; JAN
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  • 关键词:
  • 摘要:

    The precise measurement of gain lifetime at a specific wavelength holds significant importance for understanding the properties of photonic devices and further improving their performances. Here, we show that the evolution of gains can be well characterized by measuring linewidth changes of an optical mode in a microresonator; this method cannot be achieved using time-resolved photoluminescence (PL) spectroscopy. We use an erbium-doped high-Q whispering-gallery microresonator to show the feasibility of this method. With the increase of time after the pump laser is turned off, the transmission spectrum of a probe signal exhibits transitions from a Lorentz peak to a dip; this indicates a decay of optical gains, and the corresponding lifetime is estimated to be 5.1 ms. Moreover, taper fiber coupling is used to increase the pump and collection efficiency. This method can be extended to other materials and nanostructures.

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  • 基金信息:
    Ministry of Science and Technology of the People's Republic of China (MOST) [2016YFA0301304]; National Natural Science Foundation of China [61622103, 61727801, 11774197, 61471050, 61671083]; Fok Ying-Tong Education Foundation for Young Teachers in the Higher Education Institutions of China [151063]; Fund of the State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), P. R. China; Beijing Advanced Innovation Center for Future Chip (ICFC); Okinawa Institute of Science and Technology (OIST) Graduate University
  • 推荐引用方式
    GB/T 7714:
    Liu Xiao-Fei,Lei Fuchuan,Wang Tie-Jun, et al. Gain lifetime characterization through time-resolved stimulated emission in a whispering-gallery mode microresonator [J].NANOPHOTONICS,2019,8(1):127-134.
  • APA:
    Liu Xiao-Fei,Lei Fuchuan,Wang Tie-Jun,Long Gui-Lu,&Wang Chuan.(2019).Gain lifetime characterization through time-resolved stimulated emission in a whispering-gallery mode microresonator .NANOPHOTONICS,8(1):127-134.
  • MLA:
    Liu Xiao-Fei, et al. "Gain lifetime characterization through time-resolved stimulated emission in a whispering-gallery mode microresonator" .NANOPHOTONICS 8,1(2019):127-134.
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