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Optical microcavities fabricated by DBR overgrowth of pyramidal-shaped GaAs mesas

Rülke, D. 1; Karl, M. 1; Hu, D. Z. 1; Schaadt, D. M. 1; Kalt, H. 1; Hetterich, M. 1
1 Center for Functional Nanostructures (CFN), Karlsruher Institut für Technologie (KIT)

Optical cavities have been fabricated by overgrowth of truncated GaAs pyramids with a distributed Bragg reflector. The success of this overgrowth depends strongly on the crystallographic orientation of the pyramid facets and shows best results for View the MathML source A facets. In order to fabricate mesas with precisely such facets, a wet-chemical etching process including several selective etching steps has been established. To determine the optical properties of these resonators, InAs quantum dots have been used as an internal broad-band light source. The quality factors for optical modes have been determined to range up to 8000 and show a dependency on cavity width.

DOI: 10.1016/j.jcrysgro.2011.03.041
Zitationen: 5
Web of Science
Zitationen: 5
Zitationen: 4
Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2011
Sprache Englisch
Identifikator ISSN: 0022-0248
KITopen-ID: 1000027110
Erschienen in Journal of Crystal Growth
Verlag Elsevier
Band 324
Heft 1
Seiten 259-262
Nachgewiesen in Dimensions
Web of Science
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