Laser & Optoelectronics Progress, Volume. 57, Issue 1, 011402(2020)

High-Contrast Grating Structure Design for Liquid Crystal Tunable Vertical-Cavity Surface-Emitting Lasers

Zhou Zheng1, Yonggang Zou1, Linlin Shi1, Junyu Fang1, Haizhu Wang1, Jie Fan1, Chao Cui2, Li Xu1、*, and Xiaohui Ma1
Author Affiliations
  • 1State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun, Jilin 130022, China
  • 2The First Military Command Office of the Army in Changchun, Changchun, Jilin 130022, China
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    Figures & Tables(6)
    Structural diagram of Si-SiO2 HCG. (a) Three-dimensional structural diagram; (b) cross-section of the grating filled with liquid crystal
    HCG parameters and wavelength as functions of reflectivity. (a) Thickness of Si ridge in grating; (b) thickness of SiO2 in grating; (c) grating period; (d) duty cycle
    Duty cycle, period, and thickness of Si as functions of reflectivity when local reflectivity is the maximum value
    Reflectivity spectra of HCG with TM and TE polarized incident light. (a) TE polarized light; (b) TM polarized light
    Reflectivity as a function of changes in reflective index of liquid crystal in HCG and wavelength
    • Table 1. Optimization range of each parameter of HCG

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      Table 1. Optimization range of each parameter of HCG

      Incident lightParameterOptimizationrange /μm
      TESi grating thickness0.65--0.8
      TEGrating period0.5--0.6
      TEDuty cycle0.45--0.55
      TMSi grating thickness0.35--0.38
      TMGrating period0.48--0.52
      TMDuty cycle0.42--0.52
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    Zhou Zheng, Yonggang Zou, Linlin Shi, Junyu Fang, Haizhu Wang, Jie Fan, Chao Cui, Li Xu, Xiaohui Ma. High-Contrast Grating Structure Design for Liquid Crystal Tunable Vertical-Cavity Surface-Emitting Lasers[J]. Laser & Optoelectronics Progress, 2020, 57(1): 011402

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jun. 18, 2019

    Accepted: Jul. 3, 2019

    Published Online: Jan. 3, 2020

    The Author Email: Xu Li (361394566@qq.com)

    DOI:10.3788/LOP57.011402

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