Pascal Gallo

Cette personne a quitté l’EPFL

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Publications associées (33)

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Vertical cavity surface emitting laser cavity with low thermal impedance

Elyahou Kapon, Vladimir Iakovlev, Pascal Gallo

The present invention concerns new designs of VCLs with high contrast gratings (HCG) combined with diamond layer as a bottom mirror. They can be realized either with a classical V-shaped pumping scenario, or through the introduction of the pumping beam fro ...

2013

1D and 2D arrays of coupled photonic crystal cavities with a site-controlled quantum wire light source

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Kirill Atlasov, Clément William Tendaï Jarlov, Milan Calic

We investigated experimentally 1D and 2D arrays of coupled L3 photonic crystal cavities. The optical modes of the coupled cavity arrays are fed by a site-controlled quantum wire light source. By performing photoluminescence measurements and relying on near ...

Optical Society of America2013

Double-diamond high-contrast-gratings vertical external cavity surface emitting laser

Elyahou Kapon, Alexei Sirbu, Vladimir Iakovlev, Pascal Gallo

A new design of vertical external cavity surface emitting laser (VECSEL) with diamond-based high contrast gratings is proposed. The self-consistent model of laser operation has been calibrated based on experimental results and used to optimize the new prop ...

Iop Publishing Ltd2014

Investigation of coherent acoustic phonons in terahertz quantum cascade laser structures using femtosecond pump-probe spectroscopy

Elyahou Kapon, Alok Rudra, Pascal Gallo

The dynamics of acoustic vibrations in terahertz quantum cascade laser structures (THz-QCLs) is studied by means of femtosecond pump-probe spectroscopy. The phonon modes are characterized by the folding of the acoustic dispersion into an effective reduced ...

Amer Inst Physics2012

1D photonic band formation and photon localization in finite-size photonic-crystal waveguides

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

2010

Effect of Pure Dephasing and Phonon Scattering on the Coupling of Semiconductor Quantum Dots to Optical Cavities

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Alexey Lyasota, Clément William Tendaï Jarlov, Milan Calic

Using site-controlled semiconductor quantum dots (QDs) free of multiexcitonic continuum states, integrated with photonic crystal membrane cavities, we clarify the effects of pure dephasing and phonon scattering on exciton-cavity coupling in the weak-coupli ...

Amer Physical Soc2016

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

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

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

Exciton dynamics in a site-controlled quantum dot coupled to a photonic crystal cavity

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Alexey Lyasota, Clément William Tendaï Jarlov

Exciton and cavity mode (CM) dynamics in site-controlled pyramidal quantum dots (QDs), integrated with linear photonic crystal membrane cavities, are investigated for a range of temperatures and photo-excitation power levels. The absence of spurious multi- ...

Amer Inst Physics2015

Photonic-crystal microcavity laser with site-controlled quantum-wire active medium

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Kirill Atlasov, Milan Calic

Site-controlled quantum-wire photonic-crystal microcavity laser is experimentally demonstrated using optical pumping. The single-mode lasing and threshold are established based on the transient laser response, linewidth narrowing, and the details of the no ...

2009

Transverse mode discrimination in long-wavelength wafer-fused vertical-cavity surface-emitting lasers by intra-cavity patterning

Elyahou Kapon, Benjamin Dwir, Alexandru Mereuta, Alexei Sirbu, Vladimir Iakovlev, Andrei Caliman, Pascal Gallo, Zlatko Mickovic, Nicolas Volet, Lukas Mutter

Transverse mode discrimination is demonstrated in long-wavelength wafer-fused vertical-cavity surface-emitting lasers using ring-shaped air gap patterns at the fused interface between the cavity and the top distributed Bragg reflector. A significant number ...

Optical Society of America2013

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

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

AIP American Institute of Physics2008

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

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

Nature Publishing Group2010

Integration of multiple site-controlled pyramidal quantum dot systems with photonic-crystal membrane cavities

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Alexey Lyasota, Clément William Tendaï Jarlov

We describe the fabrication, epitaxial growth and photoluminescence (PL) spectra of systems of site-controlled pyramidal quantum dots (QDs) integrated with photonic crystal (PhC) membrane cavities. The spectra of the individual QDs are characterized by sca ...

Elsevier Science Bv2015