Absorption in laser structures with coupled and uncoupled quantum dots in an electric field at room temperature View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2009-04-28

AUTHORS

M. M. Sobolev, I. M. Gadzhiyev, I. O. Bakshaev, V. S. Mikhrin, V. N. Nevedomskiy, M. S. Buyalo, Yu. M. Zadiranov, E. L. Portnoi

ABSTRACT

The absorption of uncoupled and tunnel-coupled vertically correlated quantum dots (QDs), measured at room temperature, has been experimentally compared. It is revealed that matching of the laser wavelength and Stark shift for laser structures with tunnel-coupled QDs leads to resonant absorption with formation of bound and antibound exciton states with a splitting energy of ∼62 meV between them in QD molecules. For these states, an external field causes a large linear Stark shift (up to 68 meV). For uncoupled QDs, one resonant absorption peak with the formation of an exciton (for which the Stark shift does not exceed 13 meV) is observed. More... »

PAGES

490-494

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s1063782609040150

DOI

http://dx.doi.org/10.1134/s1063782609040150

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1047684669


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