Journal of Infrared and Millimeter Waves, Volume. 43, Issue 4, 557(2024)

Characteristic analysis of 1.06 μm long-cavity diode lasers based on asymmetric waveguide structures

Ren-Ze ZHAO, Xin GAO, Ding-Yang FU, Yue ZHANG, Peng SU, and Bao-Xue BO*
Author Affiliations
  • National Key Lab of High Power Semiconductor Lasers,Changchun University of Science and Technology,Changchun 130022,China
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    Figures & Tables(9)
    Refractive index and fundamental mode intensity profiles of the vertical waveguide
    The direct and indirect TPA coefficients versus QW positions
    Total internal loss and slope efficiency versus QW positions
    Confinement factor and threshold current versus QW positions
    Output power versus QW positions
    The optimized output power and corresponding QW position versus the AR reflectivity
    The optimal QW position versus the injection current
    Threshold current, slope efficiency and output power:(a) threshold current and slope efficiency versus the AR reflectivity; (b) output power versus the AR reflectivity
    • Table 1. Device parameters used

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      Table 1. Device parameters used

      SymbolParameterValue
      λwavelength1.06 μm
      nwgrefractive index of waveguide layer3.474
      nnrefractive index of n-confinement layer3.3
      nprefractive index of p-confinement layer3.3
      βwgTPA coefficient of waveguide layer2×10-8 cm/W
      Lcavity length5 mm
      wstripe width100 μm
      dQW thickness10 nm
      RHRthe rear facet reflectivity0.99
      hwaveguide layer thickness2 μm
      σefree-electron absorption cross-section3×10-18 cm2
      σhfree-hole absorption cross-section1×10-17 cm2
      Deelectron diffusion coefficient200 cm2 s-1
      Dhhole diffusion coefficient10 cm2 s-1
      ηiinternal quantum efficiency0.95
      Ncldoping concentration of confinement layer1×1018 cm-3
      αimaterial loss0.5 cm-1
      ASRH recombination coefficient5.88×108 s-1
      Bspontaneous emission coefficient1×10-10 cm3 s-1
      Cauger recombination coefficient2×10-30 cm6 s-1
      g0gain constant2140 cm-1
      Ntrtransparency carrier density1.77×1018 cm-3
      τtime of carrier capture into the QW150 fs
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    Ren-Ze ZHAO, Xin GAO, Ding-Yang FU, Yue ZHANG, Peng SU, Bao-Xue BO. Characteristic analysis of 1.06 μm long-cavity diode lasers based on asymmetric waveguide structures[J]. Journal of Infrared and Millimeter Waves, 2024, 43(4): 557

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    Paper Information

    Category: Research Articles

    Received: Aug. 7, 2023

    Accepted: --

    Published Online: Aug. 27, 2024

    The Author Email: Bao-Xue BO (bbx@cust.edu.cn)

    DOI:10.11972/j.issn.1001-9014.2024.04.016

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