Finite Element Analysis of Thermal Characteristics in Continuous Wave Long Wavelength Surface Emitting Lasers (I): Dielectric Cavity Structures

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  • BABA Toshihiko
    Division of Electrical and Computer Engineering, Yokohama National University, 156 Tokiwadai, Hodogaya–ku, Yokohama, 240 Japan
  • KONDOH Tomonobu
    Division of Electrical and Computer Engineering, Yokohama National University, 156 Tokiwadai, Hodogaya–ku, Yokohama, 240 Japan
  • KOYAMA Fumio
    Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori–ku, Yokohama, 226 Japan
  • IGA Kenichi
    Precision and Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori–ku, Yokohama, 226 Japan

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説明

We numerically analyzed the thermal characteristic in continuous wave (cw) GaInAsP/InP surface emitting lasers with dielectric multilayer mirrors by using finite element method. From the simulation of temperature distribution in cw devices, we found that MgO/Si multilayer mirror which has a high thermal conductivity is effective for heat sinking; the thermal resistance of device using MgO/Si mirror is nearly half of that using SiO2/Si one, almost independently of their thicknesses. It was also indicated that the optimum design for other structural parameters, especially the thickness of active region, is important to effectively suppress the temperature increase. The minimum threshold current was estimated to be 3 mA under cw condition for the active region diameter of 4 μm and thickness of 0.5 μm.

収録刊行物

  • Optical Review

    Optical Review 2 (2), 123-127, 1995

    公益社団法人 応用物理学会分科会 日本光学会

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