Features of simultaneous ground- and excited-state lasing in quantum dot lasers View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2012-02-17

AUTHORS

A. E. Zhukov, M. V. Maximov, Yu. M. Shernyakov, D. A. Livshits, A. V. Savelyev, F. I. Zubov, V. V. Klimenko

ABSTRACT

The lasing spectra and light-current (L-I) characteristics of an InAs/InGaAs quantum dot laser emitting in the simultaneous lasing mode at the ground- and excited-state optical transitions are studied. Lasing and spontaneous emission spectra are compared. It is shown that ground-state quenching of lasing is observed even in the absence of active region self-heating or an increase in homogeneous broadening with growth in the current density. It is found that the intensities of both lasing and spontaneous emission at the ground-state transition begin to decrease at a pump intensity that significantly exceeds the two-level lasing threshold. It is also found that different groups of quantum dots are involved in ground- and excited-state lasing. More... »

PAGES

231-235

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1063782612020285

DOI

http://dx.doi.org/10.1134/s1063782612020285

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1016343463


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