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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/31965
Title: Optical emission of InAs/GaAs quantum rings coupled to a two-dimensional photonic crystal microcavity
Authors: Sarkar, D.; Martínez Rodríguez, Luis Javier; Prieto-González, Iván; Van der Meulen, H. P.; Calleja, J. M.; Granados, Daniel; Taboada, A. G.; García Martínez, Jorge Manuel; Alija, Alfonso R.; Postigo, Pablo Aitor
Keywords: Photonic crystal microcavity
Quantum rings
Issue Date: Apr-2008
Publisher: Elsevier
Citation: Physica E 40(6): 2156-2159 (2008)
Abstract: Microphotoluminescence measurements on InAs/GaAs quantum rings embedded in a bi-dimensional photonic crystal cavity display enhanced emission intensity of single rings depending on the coupling strength to the cavity modes. The cavity is formed by three holes missing at the center of the photonic crystal structure (a linear 3 defect, L3). Light emission by the quantum rings show sharp lines at low excitation power. They undergo different enhancement factors by the separate effects of the photonic crystal and by coupling to the resonant modes, which show full linear polarization. Upon changing temperature, the uncoupled emission of single quantum rings and the resonant modes undergo different frequency shifts. This allows for an external control of the coupling.
Description: 4 páginas, 4 figuras.-- PACS: 78.67.Hc; 42.70.Qs; 73.63.Kv.
Publisher version (URL): http://dx.doi.org/10.1016/j.physe.2007.10.095
URI: http://hdl.handle.net/10261/31965
ISSN: 1386-9477
DOI: 10.1016/j.physe.2007.10.095
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