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Author Dobrovolsky, Alexander ♦ Stehr, Jan E. ♦ Sukrittanon, Supanee ♦ Kuang, Yanjin ♦ Tu, Charles W. ♦ Chen, Weimin M. ♦ Buyanova, Irina A.
Source World Health Organization (WHO)-Global Index Medicus
Content type Text
Publisher Wiley-VCH
File Format HTM / HTML
Language English
Difficulty Level Medium
Subject Domain (in DDC) Technology ♦ Medicine & health
Abstract Semiconductor nanowires (NWs) are attracting increasing interest as nanobuilding blocks for optoelectronics and photonics. A novel material system that is highly suitable for these applications are GaNP NWs. In this article, we show that individual GaP/GaNP core/shell nanowires (NWs) grown by molecular beam epitaxy on Si substrates can act as Fabry-Perot (FP) microcavities. This conclusion is based on results of microphotoluminescence (µ-PL) measurements performed on individual NWs, which reveal periodic undulations of the PL intensity that follow an expected pattern of FP cavity modes. The cavity is concluded to be formed along the NW axis with the end facets acting as reflecting mirrors. The formation of the FP modes is shown to be facilitated by an increasing index contrast with the surrounding media. Spectral dependence of the group refractive index is also determined for the studied NWs. The observation of the FP microcavity modes in the GaP/GaNP core/shell NWs can be considered as a first step toward achieving lasing in this quasidirect bandgap semiconductor in the NW geometry.
Description Country affiliation: Sweden
Author Affiliation: Dobrovolsky A ( Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden.); Stehr JE ( Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden.); Sukrittanon S ( Graduate Program of Materials Science and Engineering, La Jolla, CA, 92093, USA.); Kuang Y ( Department of Physics, University of California, La Jolla, CA, 92093, USA.); Tu CW ( Department of Electrical and Computer Engineering, University of California, La Jolla, CA, 92093, USA.); Chen WM ( Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden.); Buyanova IA ( Department of Physics, Chemistry and Biology, Linköping University, 581 83, Linköping, Sweden.)
ISSN 16136810
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Reading ♦ Research ♦ Self Learning
Interactivity Type Expositive
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-12-16
Publisher Place Germany
e-ISSN 16136829
Journal Small
Volume Number 11
Issue Number 47


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Source: WHO-Global Index Medicus