Due to the atom-like state densities,quantum-dot(QD)lasers have a number of unique optical and electronic properties.In this work,InAs/GaAs quantum dot semiconductor lasers are fabricated,and their mode gain spectra are measured by the Fourier series expansion method and the Hakki-Paoli method.Hakki-Paoli method is found to be influenced by the resolution of the measurement system,leading to underestimated gain.On the other hand, we found that Fourier Series Expansion method with a correction factor derived from the response function of the measurement system can be used to obtain gain spectrum with high accuracy.
WEI Yuxin
,
CHEN Ruili
. Gain characteristics of InAs/GaAs quantum dot lasers[J]. Journal of Hebei University(Natural Science Edition), 2016
, 36(3)
: 232
-236
.
DOI: 10.3969/j.issn.1000-1565.2016.03.003
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