The thermal resistance of 1.3μm InGaAsP vertical cavity lasers is calculated using the finite difference method in cylindrical coordinates. Three etched‐well laser structures are compared and the thermal resistance is calculated for a range of active area diameters and a typical cavity size. Using an InP regrown laser structure appears to be most promising for achieving room‐temperature continuous operation of long‐wavelength vertical cavity lasers.
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Shimizu et al. (1993) studied this question.
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