Search Results - "Mexis, M."
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1
From excitonic to photonic polariton condensate in a ZnO-based microcavity
Published in Physical review letters (10-05-2013)“…We report exciton-polariton condensation in a new family of fully hybrid ZnO-based microcavity demonstrating the best-quality ZnO material available (a bulk…”
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Journal Article -
2
Deep-UV nitride-on-silicon microdisk lasers
Published in Scientific reports (18-02-2016)“…Deep ultra-violet semiconductor lasers have numerous applications for optical storage and biochemistry. Many strategies based on nitride heterostructures and…”
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Journal Article -
3
III-Nitride-on-silicon microdisk lasers from the blue to the deep ultra-violet
Published in Applied physics letters (05-12-2016)“…We present a series of microdisk lasers realized within the same GaN-on-Si photonic platform scheme, and operating at room temperature under pulsed optical…”
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Journal Article -
4
Polariton lasing in a hybrid bulk ZnO microcavity
Published in Applied physics letters (17-10-2011)“…We demonstrate polariton lasing in a bulk ZnO planar microcavity under non-resonant optical pumping at a small negative detuning (δ ∼ −1/6 the 130meV vacuum…”
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Journal Article -
5
Fabrication and characterization of a room-temperature ZnO polariton laser
Published in Applied physics letters (13-05-2013)“…A ZnO planar optical microcavity displaying room-temperature polariton lasing over a wide range of cavity-exciton detunings has been fabricated. The cavity…”
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Journal Article -
6
Resonant second harmonic generation in a gallium nitride two-dimensional photonic crystal on silicon
Published in Applied physics letters (23-02-2015)“…We demonstrate second harmonic generation in a gallium nitride photonic crystal cavity embedded in a two-dimensional free-standing photonic crystal platform on…”
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Journal Article -
7
LO-phonon-assisted polariton lasing in a ZnO-based microcavity
Published in Physical review. B, Condensed matter and materials physics (12-03-2012)“…Polariton relaxation mechanisms are analyzed experimentally and theoretically in a ZnO-based polariton laser. A minimum lasing threshold is obtained when the…”
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Journal Article -
8
High quality factor AlN nanocavities embedded in a photonic crystal waveguide
Published in Applied physics letters (07-05-2012)“…We present a spectroscopic study of nanocavities obtained by small modifications of a W1 waveguide in an AlN photonic crystal membrane. The AlN film containing…”
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Journal Article -
9
AlN photonic crystal nanocavities realized by epitaxial conformal growth on nanopatterned silicon substrate
Published in Applied physics letters (27-06-2011)“…An original method to fabricate III-nitride photonic crystal membranes without etching of III-N materials is reported. A photonic crystal pattern is first…”
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10
Comparative micro-photoluminescence investigation of ZnO hexagonal nanopillars and the seeding layer grown on 4H-SiC
Published in Journal of luminescence (2012)“…We report on a comparative micro-photoluminescence investigation of ZnO hexagonal nanopillars (HNPs) and the seeding layer grown on the off-axis 4H-SiC…”
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Journal Article -
11
Control of polarization and dipole moment in low-dimensional semiconductor nanostructures
Published in Applied physics letters (30-11-2009)“…We demonstrate the control of polarization and dipole moment in semiconductor nanostructures, through nanoscale engineering of shape and composition. Rodlike…”
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Journal Article -
12
High quality factor photonic resonators for nitride quantum dots
Published in physica status solidi (b) (01-03-2012)“…We report the realization and the optical study of nitride photonic resonators dedicated to the blue and UV spectral range. Microdisks and photonic crystal…”
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Journal Article Conference Proceeding -
13
Polarization Properties of Columnar Quantum Dots: Effects of Aspect Ratio and Compositional Contrast
Published in IEEE journal of quantum electronics (01-02-2010)“…We report a systematic theoretical and experimental investigation of the polarization properties of columnar quantum dots (CQDs) with extremely large aspect…”
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Journal Article -
14
Room temperature UV-C lasers with nitride microdisks on silicon
Published in 2015 Conference on Lasers and Electro-Optics (CLEO) (01-05-2015)“…We demonstrate room temperature lasing in the UV-C spectral range (-275 nm) with nitride microdisks. The nitride materials are directly grown on a silicon…”
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Conference Proceeding -
15
Second harmonic generation in a GaN photonic crystal cavity on silicon
Published in 2015 Conference on Lasers and Electro-Optics (CLEO) (01-05-2015)“…We report on second harmonic generation in a free-standing gallium nitride photonic crystal cavity fabricated on a silicon substrate. The cavity is resonant at…”
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Conference Proceeding -
16
Strain evolution in GaN Nanowires: from free-surface objects to coalesced templates
Published 30-05-2013“…Top-down fabricated GaN nanowires, 250 nm in diameter and with various heights, have been used to experimentally determine the evolution of strain along the…”
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Journal Article -
17
LO-phonon assisted polariton lasing in a ZnO based microcavity
Published 30-11-2011“…PRB 85, 121201(R) (2012) Polariton relaxation mechanisms are analysed experimentally and theoretically in a ZnO-based polariton laser. A minimum lasing…”
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Journal Article -
18
Fabrication and Optical Properties of a Fully Hybrid Epitaxial ZnO-Based Microcavity in the Strong Coupling Regime
Published 13-06-2011“…Appl. Phys. Express 4 (2011) 072001 In order to achieve polariton lasing at room temperature, a new fabrication methodology for planar microcavities is…”
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Journal Article -
19
Dipole orientation in a Quantum Rod
Published in LEOS 2008 - 21st Annual Meeting of the IEEE Lasers and Electro-Optics Society (01-11-2008)“…Field-dependent photo-current measurements in Quantum Rod systems show that the orientation of the permanent dipole moment of a standard GaAs/InAs quantum dot…”
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Conference Proceeding -
20
Towards polarization insensitive semiconductor optical amplifiers using InAs/GaAs columnar quantum dots
Published in 2008 Conference on Lasers and Electro-Optics and 2008 Conference on Quantum Electronics and Laser Science (01-05-2008)“…We report columnar quantum dots (CQDs) with extremely large aspect ratios, showing nearly polarization-insensitive electroluminescence. A systematic…”
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Conference Proceeding