Laser emission with excitonic gain in a ZnO planar microcavity
Thierry Guillet,Christelle Brimont,Pierre Valvin,Bernard Gil,Thierry Bretagnon,F. Médard,M. Mihailovic,Jesús Zúñiga-Pérez,Mathieu Leroux,Fabrice Semond,Sophie Bouchoule +10 more
TLDR
In this 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.Abstract:
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. This shows that exciton scattering processes, typical of II-VI semiconductors, are involved in the gain process.read more
Citations
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Polariton lasing in a hybrid bulk ZnO microcavity
Thierry Guillet,Meletios Mexis,Jacques Levrat,Georg Rossbach,Christelle Brimont,Thierry Bretagnon,Bernard Gil,Raphaël Butté,Nicolas Grandjean,Laurent Orosz,François Réveret,Joël Leymarie,Jesús Zúñiga-Pérez,Mathieu Leroux,Fabrice Semond,Sophie Bouchoule +15 more
TL;DR: In this article, the authors demonstrate polariton lasing in a bulk ZnO planar microcavity under non-resonant optical pumping at a small negative detuning (δ ∼ − 1/6 the 130 meV vacuum Rabi splitting) and a temperature of 120 K.
Journal ArticleDOI
Polariton lasers. Hybrid light–matter lasers without inversion
TL;DR: Polariton Lasing as mentioned in this paper is coherent emitters in which the fundamental constituents are not photons amplified by a gaining medium but hybrid, part exciton and part photon, quasi-particles named polaritons.
Journal ArticleDOI
Lasing threshold doubling at the crossover from strong to weak coupling regime in GaAs microcavity
P. Tsotsis,P. Tsotsis,P. S. Eldridge,Tingge Gao,Tingge Gao,S. I. Tsintzos,Zacharias Hatzopoulos,Zacharias Hatzopoulos,Pavlos G. Savvidis,Pavlos G. Savvidis +9 more
TL;DR: In this article, the temperature dependence of lasing threshold across the border of the strong-to-weak coupling regime transition in high-finesse GaAs MCs under non-resonant optical pumping was investigated.
Journal ArticleDOI
Fabrication and characterization of a room-temperature ZnO polariton laser
Feng Li,Laurent Orosz,Olfa Kamoun,Sophie Bouchoule,Christelle Brimont,Pierre Disseix,Thierry Guillet,Xavier Lafosse,Mathieu Leroux,Joël Leymarie,Guillaume Malpuech,Meletios Mexis,M. Mihailovic,Gilles Patriarche,François Réveret,Dimitri Solnyshkov,Jesús Zúñiga-Pérez +16 more
TL;DR: In this paper, a ZnO planar optical microcavity displaying room-temperature polariton lasing over a wide range of cavity-exciton detunings has been fabricated.
Journal ArticleDOI
Polariton condensates at room temperature
TL;DR: In this paper, the authors review the recent developments of the polariton physics in microcavities featuring the exciton-photon strong coupling at room temperature, and leading to the achievement of room-temperature polariton condensates.
References
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Journal ArticleDOI
Room-temperature polariton lasing in semiconductor microcavities.
Stavros Christopoulos,G. Baldassarri Höger von Högersthal,A. J. D. Grundy,Pavlos G. Lagoudakis,Alexey Kavokin,Jeremy J. Baumberg,Gabriel Christmann,Raphaël Butté,Eric Feltin,J.-F. Carlin,Nicolas Grandjean +10 more
TL;DR: Angular and spectrally resolved luminescence show that the polariton emission is beamed in the normal direction with an angular width of +/-5 degrees and spatial size around 5 microm.
Journal ArticleDOI
Radiative Recombination in Highly Excited CdS
TL;DR: In this paper, the processes involved in the laser effect in CdS excited by electron bombardment have been studied with the aid of an experimental technique allowing the spectral dependence of the optical gain to be obtained.
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Room-temperature stimulated emission of ZnO: Alternatives to excitonic lasing
TL;DR: In this paper, the authors investigated the temperature dependence of the band gap and the homogeneous width of the free exciton resonance and presented alternative interpretations for RT stimulated emission in ZnO.
Journal ArticleDOI
Co-existence of strongly and weakly localized random laser modes
TL;DR: In this article, the localization of localized and extended modes of light in micro-structured ZnO powders is investigated and shown to exist simultaneously in both types of modes, which corroborates the prediction that localized modes have a lower loss rate than that of extended modes.
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Optically pumped nanowire lasers: invited review
TL;DR: In this article, a detailed review of the properties of optically pumped ZnO nanowire laser is presented, and the key dependence of the laser threshold on the diameter of the nanowires is demonstrated and explained by means of a thorough study of guided modes in semiconducting nanometers.