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Demonstration of ultralow-threshold 2 micrometer microlasers on chip

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  • Special Topic: Microcavity Photonics
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Abstract

We demonstrate ultralow-threshold thulium-doped, as well as thulium-holmium-codoped, microtoroid lasers on silicon chips, operating at the wavelength of around 2 μm. High quality factor whispering gallery mode (WGM) microtoroid cavities with proper thulium and holmium concentrations are fabricated from the silica sol-gel films. The highly confined WGMs make the microcavity lasers operate with ultralow thresholds, approximately 2.8 μW and 2.7 μW for the thulium-doped and the thulium-holmium-codoped microlasers, respectively.

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Authors and Affiliations

  1. National Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210093, China

    HuiBo Fan, XiaoShun Jiang, Yang Ding & Min Xiao

  2. Department of Physics, University of Arkansas, Fayetteville, Arkansas, 72701, USA

    Min Xiao

Authors
  1. HuiBo Fan
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  2. XiaoShun Jiang
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  3. Yang Ding
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  4. Min Xiao
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Correspondence to XiaoShun Jiang or Min Xiao.

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Fan, H., Jiang, X., Ding, Y. et al. Demonstration of ultralow-threshold 2 micrometer microlasers on chip. Sci. China Phys. Mech. Astron. 58, 114204 (2015). https://doi.org/10.1007/s11433-015-5669-4

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  • DOI: https://doi.org/10.1007/s11433-015-5669-4

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