6 June 1997 Optical gain of strained-layer hexagonal and cubic GaN quantum well lasers
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Abstract
The optical gains of strained-layer hexagonal and cubic GaN quantum wells are calculated within the multiband effective mass approximation. The 6 X 6 multiband effective-mass Hamiltonians are used to calculate the band structures of hexagonal and cubic quantum wells. Non-Markovian relaxation is taken into account in the optical gain calculation. Calculated results show that the optical gains of the cubic quantum well are larger in magnitudes than those of the hexagonal GaN quantum well over the wide range of carrier densities. The expected inferior performance of the wurzite quantum-well laser as compared with the cubic structure is mainly due to the heavier effective mass of the HH1 band of the former at the zone center.
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Do-Yeol Ahn, Do-Yeol Ahn, } "Optical gain of strained-layer hexagonal and cubic GaN quantum well lasers", Proc. SPIE 2994, Physics and Simulation of Optoelectronic Devices V, (6 June 1997); doi: 10.1117/12.275554; https://doi.org/10.1117/12.275554
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