Publications de Alok Rudra | EPFL Graph Search

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A tunable Fabry-Perot vertical cavity photonic device and a method of its fabrication are presented. The device comprises top and bottom semiconductor DBR stacks and a tunable air-gap cavity therebetween. The air-gap cavity is formed within a recess in a s ...

The intermixing process of ultrathin InAs/InP strained quantum well structures by thermal annealing at 730-830-degrees-C is investigated by photoluminescence measurements. Analyzing the results using a microscopic model, the interdiffusion process is characterized by an activation energy close to 3.8+/-2.0 eV, leading to an interdiffusion coefficient close to 7+/-0.5x10(-7) cm2/s at 830-degrees-C.

We investigated the effects of hydrogen irradiation on the degree of linear polarization, rho, of the light emitted by site-controlled, dilute-nitride InGaAsN V-groove quantum wires (QWRs). While in the as-grown sample the polarization of the QWR emission ...

We show that far off-resonance exciton-photon coupling reported for self-assembled quantum dots in optical microcavities is not universal, and demonstrate that site-controlled dots exhibit clean phonon-mediated resonant coupling.

The authors present a polarization-resolved photoluminescence study of single semiconductor quantum dots (QDs) interconnected to quantum wires, measured both in a top geometry, and in a less conventional cleaved-edge geometry. Strong polarization anisotrop ...

Alok Rudra

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Magneto-Optical Spectroscopy Of Charged Excitonic States In Quantum Dots: Evidence Of Quantum Correlation

Quantum dot molecules realized with modulated quantum wire heterostructrues

Laser a cavite verticale et a emission par surface

As/P interdiffusion in ultrathin InAs/InP strained quantum wells

Integration of site-controlled pyramidal quantum dots and photonic crystal membrane cavities

Reduced temperature sensitivity of the polarization properties of hydrogenated InGaAsN V-groove quantum wires

Phonon-mediated exciton-photon coupling in site-controlled quantum-dot-nanocavity systems

Theory and experiment of step bunching on misoriented GaAs (001) during metallorganic vapor-phase epitaxy

Step Ordering Induced by Nonplanar Patterning of GaAs surfaces

Polarization-Resolved Optical Absorption in Single V-groove Quantum Wires

Optical polarization anisotropy and hole states in pyramidal quantum dots

RETRACTED: Polarization-entangled photons produced with high-symmetry site-controlled quantum dots

Site-controlled single quantum wire integrated into a photonic crystal membrane microcavity

In(Al)GaAs–AlGaAs Wafer Fused VCSELs Emitting at 2µm Wavelength

Quantum Magnetotransport in Periodic V-grooved Heterostructures

Growth and Transformation of InAs/InP Ultra-Thin Layers Obtained by Chemical Beam Epitaxy

Contribution of EELS and quantitative dark field-imaging to the understanding of strain and chemistry in InGaAs quantum wires

Entangled photons produced with high-symmetry site-controlled quantum dots

Origin of Disorder in Self-Ordered GaAs/AlGaAs Quantum Wires grown by OMVPE on V-grooved Substrate

Optical emission from a V-groove quantum wire laser diode immersed in high magnetic fields