Intersubband transitions from the second subband in a coupled quantum wells structure

Y. Lavon, A. Sa'ar*, Z. Moussa, F. H. Julien, R. Planel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Asymmetrical coupled quantum wells structures with energy separation between the first two subbands of the order of 10-50 meV are key structures in the design of optically pumped intersubband lasers. In these structures the population of the second subband is not negligible and intersubband transitions from the second to higher excited subbands can be observed. In this work we investigate the temperature dependency of the intersubband transitions from the second subband in an asymmetrical coupled quantum wells structure. We show that this approach provides a direct way to measure the energy separation between the second subband and the Fermi energy which is a crucial parameter in the design of optically pumped intersubband lasers.

Original languageAmerican English
Pages (from-to)1-7
Number of pages7
JournalSuperlattices and Microstructures
Volume19
Issue number1
DOIs
StatePublished - Jan 1996

Bibliographical note

Funding Information:
Acknowledgements—This work has been supported by a joint grant of the Commission of European Communities (EC No. CI1*-CT93-0072) and the Israeli Ministry of Science.

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