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Alok Rudra

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Publications associées (84)

Bound-to-continuum terahertz quantum cascade laser with a single-quantum-well phonon extraction injection stage

Elyahou Kapon, Alok Rudra, Jérôme Faist, Pascal Gallo

A terahertz quantum cascade laser design that combines a wide gain bandwidth, large photon-driven transport and good high-temperature characteristics is presented. It relies on a diagonal transition between a bound state and doublet of states tunnel couple ...

2009

Coulomb correlations of charged excitons in semiconductor quantum dots

Elyahou Kapon, Daniel Oberli, Alok Rudra

The emission pattern of charged excitons in a semiconductor quantum dot (QD) is composed of a quadruplet of linearly polarized lines when a magnetic field is applied in a Voigt configuration. The orientation of the linear polarization of exciton emission i ...

2009

A terahertz quantum cascade. laser grown by low-pressure metalorganic vapor phase epitaxy

Elyahou Kapon, Alok Rudra, Lorenzo Sirigu, Jérôme Faist

AIP American Institute of Physics2008

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

Benjamin Dwir, Elyahou Kapon, Alok Rudra

AIP American Institute of Physics2008

Narrow inhomogeneous broadening of V-groove quantum wires grown on vicinal substrates

Benjamin Dwir, Elyahou Kapon, Daniel Oberli, Alok Rudra, Nicolas Moret, Pascal Gallo

Significant reduction in inhomogeneous broadening of GaAs/AlGaAs V- groove quantum wires (QWRs) is achieved by growing them on vicinal (001) GaAs substrates misaligned by several degrees with respect to the [1 (1) over bar0] groove direction. Low temperatu ...

American Institute of Physics2008

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

Benjamin Dwir, Elyahou Kapon, Alok Rudra, Kirill Atlasov, Pascal Gallo, Arun Mohan, Marco Felici

AIP American Institute of Physics2008

Quantum dot molecules realized with modulated quantum wire heterostructrues

Elyahou Kapon, Alok Rudra, Qing Zhu

2008

Very low transperancy currents in double quantum well InGaAs semiconductor lasers with δ doped resonant tunneling

Elyahou Kapon, Alok Rudra

AIP American Institute of Physics2008

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

Elyahou Kapon, Alok Rudra, Vladimir Iakovlev, Alexandru Mereuta, Andrei Caliman

2008

Excited excitonic states observed in semiconductor quantum dots using polarization resolved optical spectroscopy

Elyahou Kapon, Daniel Oberli, Alok Rudra, Valentina Troncale

We present results on the polarization-resolved photoluminescence emitted from InGaAs/AlGaAs single quantum dots (QDs) grown in inverted tetrahedral pyramids. The emitted light was detected for two mutually perpendicular linear polarization directions in t ...

American Institute of Physics2007

Control of valence band states in pyramidal quantum dot-in-dot semiconductor heterostructures

Elyahou Kapon, Alok Rudra, Valentina Troncale

AIP American Institute of Physics2007

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

Benjamin Dwir, Elyahou Kapon, Alok Rudra, Kirill Atlasov

AIP American Institute of Physics2007

Strongly reduced exciton transfer between quantum wires

Klaus Leifer, Elyahou Kapon, Alok Rudra

AIP American Institute of Physics2007

Sub-meV Photoluminescence Linewidth and >106 cm2/Vs Electron Mobility in AlGaAs/GaAs Quantum Wells Grown by Metallorganic Vapor Phase Epitaxy on Slightly Misoriented Substrates

Benjamin Dwir, Elyahou Kapon, Daniel Oberli, Alok Rudra, Nicolas Moret, Ajay Kumar

2006

Temperature Dependence of the Coupling between n-type d-Doping Region and Quantum Dot Assemblies

Elyahou Kapon, Alok Rudra

2006

3.125Gb/s modulation up to 70°C using 1.3µm VCSELs fabricated with localized wafer fusion for 10GBASE LX4 applications

Elyahou Kapon, Alok Rudra, Vladimir Iakovlev, Grigore Suruceanu, Alexandru Mereuta, Andrei Caliman

2006

Step Ordering Induced by Nonplanar Patterning of GaAs surfaces

Benjamin Dwir, Elyahou Kapon, Alok Rudra

AIP American Institute of Physics2006

Luttinger-liquid behavior in weakly disordered quantum wires

Benjamin Dwir, Elyahou Kapon, Alok Rudra

2006

Influence of long-range substrate roughness in V-groove quantum wire structures

Klaus Leifer, Elyahou Kapon, Alok Rudra, Hakon Reichardt

2006

Correlation between optical properties and interfaces morphology of GaAs/AlGaAs quantum wells

Elyahou Kapon, Daniel Oberli, Alok Rudra, Nicolas Moret

We investigate the embedded interfaces of GaAs/AlGaAs quantum wells grown by metal organic vapor phase epitaxy on slightly (< 1 degrees)-misoriented (001) substrates using selective etching and atomic force microscopy. Depending on the substrate misorienta ...

AIP American Institute of Physics2006

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