International audience
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September 2017 (v1)Journal articleUploaded on: December 4, 2022
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September 3, 2021 (v1)Journal article
Resonant scattering, guided mode propagation phase and/or orientation-dependent phase retardations are the three main mechanisms used until now to conceive optical metasurfaces.
Uploaded on: December 4, 2022 -
July 26, 2017 (v1)Journal article
X-ray diffraction has been widely used to characterize the structural properties (strain and structural quality) of semiconductor heterostructures. This work employs hybrid multiple diffraction to analyze r-oriented Zn 1Àx Mg x O layers grown by molecular beam epitaxy on ZnO substrates. In such a low-symmetry material system, additional...
Uploaded on: December 3, 2022 -
2016 (v1)Journal article
Six out of seven crystal systems are optically anisotropic and birefringent. We review recent insight that biaxial crystals generally exhibit four singular axes (or exceptional points) which can pairwise degenerate for special cases. Planar anisotropic microcavities are discussed as effectively biaxial systems and we predict exceptional points...
Uploaded on: December 3, 2022 -
2022 (v1)Journal article
The research on GaN lasers aims for a continuous reduction of the lasing threshold. An approach to achieve it consists in exploiting stimulated polariton scattering. This mechanism, and the associated polariton lasers, requires an in-depth knowledge of the GaN excitonic properties, as polaritons result from the coupling of excitons with...
Uploaded on: December 3, 2022 -
July 9, 2017 (v1)Conference paper
The polariton emission in a microcavity is usually measured from the surface, and little is known about the actual role of guided modes below the light cone in air, that can couple to the exciton transition, collect part of the emission and contribute to polariton losses. In this work we investigate a ZnO planar microcavity with mesas. The...
Uploaded on: December 4, 2022 -
2023 (v1)Journal article
The ideal single-photon source displaying high brightness and purity, emission on-demand, mature integration, practical communication wavelength (i.e., in the telecom range), and operating at room temperature does not exist yet. In 2018, a new single-photon source was discovered in gallium nitride (GaN) showing high potential thanks to its...
Uploaded on: November 25, 2023 -
August 24, 2022 (v1)Journal article
International audience
Uploaded on: March 24, 2023 -
September 7, 2009 (v1)Publication
Strong coupling of multiple branches polariton in a ZnO microcavity.
Uploaded on: December 4, 2022 -
September 7, 2022 (v1)Journal article
International audience
Uploaded on: December 4, 2022 -
June 12, 2023 (v1)Publication
International audience
Uploaded on: August 30, 2024 -
April 2023 (v1)Journal article
International audience
Uploaded on: April 14, 2023 -
November 24, 2010 (v1)Conference paper
No description
Uploaded on: December 3, 2022 -
April 16, 2009 (v1)Conference paper
oral
Uploaded on: December 3, 2022 -
June 14, 2023 (v1)Journal article
No description
Uploaded on: November 25, 2023 -
November 2019 (v1)Journal article
International audience
Uploaded on: December 3, 2022 -
June 9, 2014 (v1)Conference paper
Spatial observation and optical manipulation of polariton quantum liquids are raising a large interest in the studies of polariton condensates in microcavities [1]. In this work, we report the study of polariton condensates in a semi-hybrid ZnO microcavity where the condensation of polaritons up to room temperature has been achieved. This...
Uploaded on: March 26, 2023 -
May 23, 2011 (v1)Journal article
The lasing operation of a ZnO planar microcavity under optical pumping is demonstrated from T=80 K to 300 K. At the laser threshold, the cavity switches from the strong coupling to the weak coupling regime. A gain-related transition, which appears while still observing polariton branches and, thus, with stable excitons, is observed below 240K....
Uploaded on: December 4, 2022