GaN microwires as optical microcavities: whispering gallery modes Vs Fabry-Perot modes

被引：39
作者：
Coulon, Pierre-Marie [1 ]
Hugues, Maxime [1 ]
Alloing, Blandine [1 ]
Beraudo, Emmanuel [1 ]
Leroux, Mathieu [1 ]
Zuniga-Perez, Jesus [1 ]
机构：
[1] CRHEA CNRS, F-06560 Valbonne, France
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 17期
关键词：
REFRACTIVE-INDEXES; MICRODISK CAVITIES; LASERS; GROWTH; ALN;
D O I：
10.1364/OE.20.018707
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
GaN microwires grown by metalorganic vapour phase epitaxy and with radii typically on the order of 1-5 micrometers exhibit a number of resonances in their photoluminescence spectra. These resonances include whispering gallery modes and transverse Fabry-Perot modes. A detailed spectroscopic study by polarization-resolved microphotoluminescence, in combination with electron microscopy images, has enabled to differentiate both kinds of modes and determined their main spectral properties. Finally, the dispersion of the ordinary and extraordinary refractive indices of strain-free GaN in the visible-UV range has been obtained thanks to the numerical simulation of the observed modes. (C)2012 Optical Society of America
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收藏
页码：18707 / 18716
页数：10
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