Gain competition in multicolor quantum cascade lasers
CLEO) and Quantum Electronics and Laser Science Conference(2010)
摘要
We investigated dual-color mid-infrared quantum cascade lasers. We found that due to gain competition mid-infrared modes tend to start lasing in higher order lateral modes. The mid-infrared mode with the lower threshold current reduces population inversion for the second laser with the higher threshold current due to stimulated emission. A theoretical model describing this effect was developed, which is important for future device optimization.
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关键词
stimulated emission,infrared spectra,mathematical model,population inversion,semiconductor lasers,higher order
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