AI Article Synopsis
- GaN microwires, which are typically 1-5 micrometers in radius and grown using metalorganic vapour phase epitaxy, show various resonances in their photoluminescence spectra.
- A spectroscopic study utilizing polarization-resolved microphotoluminescence and electron microscopy has successfully identified different modes, like whispering gallery and transverse Fabry-Perot modes, and characterized their spectral properties.
- The ordinary and extraordinary refractive indices of strain-free GaN in the visible-UV range were determined through numerical simulations based on these observed modes.
Article Abstract
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.
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| http://dx.doi.org/10.1364/OE.20.018707 | DOI Listing |
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