Excitons hosted by GaN/(Al,Ga)N quantum wells (QWs) are spatially indirect due to the giant built-in electricfield that separates electrons and holes along the growth direction. This electric field, and thus exciton energy,can be reduced by depositing metallic layers on the sample surface. Using spatially resolved microphotolu-minescence...
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September 2023 (v1)Journal articleUploaded on: November 25, 2023
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July 2022 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
June 5, 2023 (v1)Conference paper
We experimentally demonstrate polariton laser in a GaN ridge waveguide. The strong-coupling regime is assessed through a comparison of the measured and modeled cavity free spectral range (FSR). The findings reveal that the laser exhibits a transition from monomode to multimode operation as the temperature is increased from 70K to 150K. The...
Uploaded on: December 10, 2023 -
September 30, 2016 (v1)Journal article
We demonstrate phase-matched second harmonic generation in gallium nitride on silicon microdisks. The microdisks are integrated with side-coupling bus waveguides in a two-dimensional photonic circuit. The second harmonic generation is excited with a continuous wave laser in the telecom band. By fabricating a series of microdisks with diameters...
Uploaded on: February 28, 2023