Abstract

Focused ion beam processing has been applied to fabricate coupled-cavity AlInAs/InGaAs/InP quantum cascade lasers. The evolution of the mode spectrum of the two coupled Fabry–Perot cavities, controlled by the driving currents of both sections leading to single mode operation, has been observed. Theoretical analysis of the observed behavior, supported by extensive numerical modeling is given. The analysis showed that the most efficient single mode operation takes place in the case of relatively close current densities in both sections of coupled-cavity quantum cascade lasers, which assures the overlap of the gain spectra. In such a configuration, fine tuning of the currents allows the favoring of the mode that coincides with gain peaks and suppresses all others.

Details

Title
Coupled-cavity AlInAs/InGaAs/InP quantum cascade lasers fabricated by focused ion beam processing
Author
Pierściński, Kamil 1 ; Bugajski, Maciej 1   VIAFID ORCID Logo  ; Czyszanowski, Tomasz 2   VIAFID ORCID Logo  ; Kolek, Andrzej 3 ; Wesołowski, Marek 4 ; Kuc, Maciej 2 ; Sarzała, Robert P 2 ; Dems, Maciej 2 ; Płuska, Mariusz 1 ; Pierścińska, Dorota 1   VIAFID ORCID Logo  ; Strupiński, Włodek 4 ; Czerwiński, Andrzej 1 

1  Institute of Electron Technology, Al. Lotników 32/46, 02-668 Warszawa, Poland 
2  Lodz University of Technology, Institute of Physics, Photonics Group, Wólczańska 219, 90-924 Łódź, Poland 
3  Department of Electronics Fundamentals, Rzeszów University of Technology, 35-959 Rzeszów, Poland 
4  ENT SA, Al. Szucha 8, 00-582 Warszawa, Poland 
Publication year
2019
Publication date
Jan 2019
Publisher
IOP Publishing
e-ISSN
25157647
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1088/2515-7647/aaeca9
ProQuest document ID
2547582900
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.