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Fizika i Tekhnika Poluprovodnikov, 2023 Volume 57, Issue 4, Pages 301–307 (Mi phts6873)

Semiconductor physics

Broadband superluminescent diodes based on multiple InGaAs/GaAs quantum well-dot layers

M. V. Maksimova, Yu. M. Shernyakovb, G. O. Kornyshova, O. I. Simchuka, N. Yu. Gordeevb, A. A. Bekmanb, A. S. Payusovb, S. A. Mintairovb, N. A. Kalyuzhnyyb, M. M. Kulaginab, A. E. Zhukovc

a Alferov Federal State Budgetary Institution of Higher Education and Science Saint Petersburg National Research Academic University of the Russian Academy of Sciences, 194021 St. Petersburg, Russia
b Ioffe Institute, 194021 St. Petersburg, Russia
c National Research University "Higher School of Economics", St. Petersburg Branch, 190008 St. Petersburg, Russia

Abstract: We have studied superluminescent diodes with simplified design and active region based on 5 or 7 layers of InGaAs/GaAs quantum well-dots (QWDs). Emission peaks of the individual QWD layers are shifted with respect to each other by 15–35 nm to provide as wide as possible emission line in a superluminescent mode with central wavelength of about 1 $\mu$m without significant spectral dips. For superluminescent diodes with the active region based on 5 and 7 QWD layers, the maximal value of full width at half maximum of emission spectrum was 92 and 103 nm respectively.

Keywords: quantum well dots, broadband radiation source, superluminescent diode.

Received: 26.05.2023
Revised: 16.06.2023
Accepted: 23.06.2023

DOI: 10.21883/FTP.2023.04.55902.5262



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