

Transparency Current and Gain Spectrum of InGaAs/GaAs Quantum Well-Dots
Abstract
The experimental dependence of the transparency current of InGaAs/GaAs quantum well-dots on the photon energy, which corresponds to the difference of quasi-Fermi levels for electrons and holes, has been obtained. It is shown that modal gain spectra can be calculated from spontaneous luminescence spectra using the obtained dependence and a relation between spontaneous luminescence and optical absorption. The modal gain spectra of InGaAs/GaAs quantum well-dots at different pump currents have been calculated. The technique can be used to study gain spectra of the devices operating in superluminescence regimes, when the position of the gain maximum is unknown.
About the Authors
G. O. KornyshovRussian Federation
St. Petersburg
A. S. Payusov
Russian Federation
St. Petersburg
A. A. Kharchenko
Russian Federation
St. Petersburg
A. A. Beckman
Russian Federation
St. Petersburg
Yu. M. Shernyakov
Russian Federation
St. Petersburg
S. A. Mintairov
Russian Federation
St. Petersburg
N. A. Kalyuzhny
Russian Federation
St. Petersburg
M. V. Maksimov
Russian Federation
St. Petersburg
N. Yu. Gordeev
Russian Federation
St. Petersburg
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Review
For citations:
Kornyshov G.O., Payusov A.S., Kharchenko A.A., Beckman A.A., Shernyakov Yu.M., Mintairov S.A., Kalyuzhny N.A., Maksimov M.V., Gordeev N.Yu. Transparency Current and Gain Spectrum of InGaAs/GaAs Quantum Well-Dots. Zhurnal Prikladnoii Spektroskopii. 2025;92(2):193-197. (In Russ.)