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Elyahou Kapon

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Related publications (173)

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Photocurrent spectroscopy of site-controlled pyramidal quantum dots

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

Intraband photocurrent spectroscopy of site-controlled pyramidal quantum dots by inserting them into the intrinsic region of n-i-n like quantum dot infrared photodetector structure is reported. The photovoltaic response is observed in the mid-infrared regi ...

American Institute of Physics2012

Physical origins of optical anisotropy in quantum-confined semiconductors: The roles of valence band mixing, transition broadening, and state filling

Elyahou Kapon, Alok Rudra, Mikhail Lazarev

We investigate experimentally and theoretically the impact of valence band mixing and spectrum of confined states on the polarization of light emitted from or absorbed by GaAs/AlGaAs semiconductor quantum dots and quantum wires with tailored heterostructur ...

AIP Publishing2023

Flip-Chip Wafer-Fused OP-VECSELs Emitting 3.65 W at the 1.55-mu m Waveband

Elyahou Kapon, Alok Rudra, Alexandru Mereuta, Andrei Caliman, Pascal Gallo, Grigore Suruceanu

Optically pumped vertical external cavity surface emitting lasers (VECSELs) based on flip-chip gain mirrors emitting at the 1.55 mu m wavelength range are reported. The gain mirrors employ wafer-fused InAlGaAs/InP quantum well heterostructures and GaAs/AlA ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2019

High-power optically-pumped VECSELs emitting in the 1310-nm and 1550-nm wavebands

Elyahou Kapon, Alexandru Mereuta, Alexei Sirbu, Vladimir Iakovlev, Andrei Caliman, Nicolas Volet, Qing Zhu

1300-nm, 1550-nm and 1480-nm wavelength, optically-pumped VECSELs based on wafer-fused InAlGaAs/InPAlGaAs/GaAs gain mirrors with intra-cavity diamond heat-spreaders demonstrate very low thermal impedance of 4 K/W. Maximum CW output of devices with5 groups ...

Spie-Int Soc Optical Engineering, Po Box 10, Bellingham, Wa 98227-0010 Usa2011

High-Power 760 nm VECSEL Based on Quantum Dot Gain Mirror

Elyahou Kapon, Alexandru Mereuta, Andrei Caliman, Grigore Suruceanu

We report high-power second-harmonic generation of 760 nm laser light from optically-pumped vertical-external-cavity surface-emitting laser based on quantum dot active medium. The laser generates 1.2 W in fundamental transverse mode with fixed linear polar ...

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2020

Mechanisms of Quantum Dot Energy Engineering by Metalorganic Vapor Phase Epitaxy on Patterned Nonplanar Substrates

Elyahou Kapon, Benjamin Dwir, Paolo De Los Rios, Klaus Leifer, Qing Zhu

A novel technique for tuning the strength of quantum confinement in site-controlled semiconductor quantum dots (QDs) is introduced and investigated theoretically and experimentally. The method makes use of controlled local growth rates during metalorganic ...

American Chemical Society2007

High-power flip-chip semiconductor disk laser in the 1.3 μm wavelength band

Elyahou Kapon, Alexandru Mereuta, Alexei Sirbu, Vladimir Iakovlev

We present 6.1 W of output power from a flip-chip semiconductor disk laser (SDL) emitting in the 1.3 mu m wavelength region. This is the first demonstration of a flip-chip SDL in this wavelength range with output powers that are comparable to those obtaine ...

Optical Soc Amer2014

Effects of surface plasmon polariton-mediated interactions on second harmonic generation from assemblies of pyramidal metallic nano-cavities

Elyahou Kapon, Benjamin Dwir, Justyna Szeszko

We use polarization-resolved two-photon microscopy to investigate second harmonic generation (SHG) from individual assemblies of site-controlled nano-pyramidal recess templates covered with silver films. We demonstrate the effect of the surface plasmon pol ...

Optical Soc Amer2014

Phonon-Mediated Coupling of InGaAs/GaAs Quantum-Dot Excitons to Photonic Crystal Cavities

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Vincenzo Savona, Pascal Gallo, Kirill Atlasov, Milan Calic, Guillaume Jean Tarel

We demonstrate that the emission characteristics of site-controlled InGaAs/GaAs single quantum dots embedded in photonic crystal slab cavities correspond to single confined excitons coupled to cavity modes, unlike previous reports of similar systems based ...

2011

Effect of sidewall passivation in BCl3/N2 inductively coupled plasma etching of two-dimensional GaAs photonic crystals

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

The effect of surface passivation in BCl3/N-2 inductively coupled plasma reactive-ion etching of GaAs-based photonic crystals (PhCs) was investigated. It is shown that sidewall passivation is crucial for achieving cylindrical, vertical PhC holes, where the ...

2009

Wafer-fused VECSELs emitting in the 1310 nm waveband

Elyahou Kapon, Alexandru Mereuta, Alexei Sirbu, Vladimir Iakovlev, Andrei Caliman, Nicolas Volet, Kamil Pawel Pierscinski

Optically pumped wafer fused 1310 nm VECSELs have the advantage of high output power and wavelength agility. Gain mirrors in these lasers are formed by direct bonding of InAlGaAs/InP active cavities to Al(Ga) As/GaAs DBRs. We present for the first time Wat ...

Spie-Int Soc Optical Engineering2014

1.55-mu m wavelength wafer-fused OP-VECSELs in flip-chip configuration

Elyahou Kapon, Alexandru Mereuta, Andrei Caliman, Pascal Gallo

Optically-pumped vertical external cavity surface emitting lasers (VECSELs) based on flip-chip gain mirrors emitting at the 1.55-mu m wavelength range are reported. The gain mirrors employ wafer-fused InAlGaAs/InP quantum well heterostructures and GaAs/AlA ...

SPIE-INT SOC OPTICAL ENGINEERING2019

Selective Effects of the Host Matrix in Hydrogenated InGaAsN Alloys: Toward an Integrated Matrix/Defect Engineering Paradigm

Elyahou Kapon, Marco Felici

In dilute nitride InyGa1-yAs1-xNx alloys, a spatially controlled tuning of the energy gap can be realized by combining the introduction of N atoms-inducing a significant reduction of this parameter-with that of hydrogen atoms, which neutralize the effect o ...

WILEY-V C H VERLAG GMBH2021

Tilted-potential photonic crystal cavities for integrated quantum photonics

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Alexey Lyasota, Bruno Marie Dominique Rigal, Antoine Maxime Delgoffe, Alessio Massimiliano Davide Miranda

We propose and investigate a new type of photonic crystal (PhC) cavity for integrated quantum photonics, which provides tailored optical modes with both confined and extended spatial components. The structures consist of elongated PhC cavities in which the ...

2019

Charged excitons in modulation-doped quantum wires

Elyahou Kapon, Benjamin Dwir, Marc-André Dupertuis, Daniel Oberli, Nicolas Moret, Tim Otterburg

We report on the observation of negatively- and positively-charged excitons in the photoluminescence spectra of V-groove quantum wires. The. charged exciton binding energy increases with the strength of the quantum confinement. We demonstrate that fluctuat ...

American Institute of Physics2005

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

Elyahou Kapon, Alok Rudra, Daniel Oberli, 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

Site-controlled quantum dots coupled to a photonic crystal molecule

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Pascal Gallo, Clément William Tendaï Jarlov, Milan Calic, Bruno Marie Dominique Rigal

Two site-controlled quantum dots (QDs) were integrated in a photonic crystal molecule (PCM) formed by L3 nanocavities. A statistical analysis of the coupled cavity modes demonstrated the formation of bonding and anti-bonding delocalized PCM states. Exciton ...

American Institute of Physics2015

Control of cavity lifetime of 1.5 mu m wafer-fused VCSELs by digital mirror trimming

Elyahou Kapon, Alexandru Mereuta, Alexei Sirbu, Vladimir Iakovlev, Andrei Caliman, Grigore Suruceanu, Zlatko Mickovic, Dalila Ellafi

Digital chemical etching is used to trim the output mirror thickness of wafer-fused VCSELs emitting at a wavelength near 1.5 mu m. The fine control of the photon cavity lifetime thus achieved is employed to extract important device parameters and optimize ...

Optical Soc Amer2014

Nonorthogonal theory of polarons and application to pyramidal quantum dots

Elyahou Kapon, Marc-André Dupertuis, Danail Obreschkow, Sascha Dalessi

We present a general theory for semiconductor polarons in the framework of the Frohlich interaction between electrons and phonons. The latter is investigated using noncommuting phonon creation/annihilation operators associated with a natural set of nonorth ...

2007

Single site-controlled inverted pyramidal InGaAs QD-nanocavity operating at the onset of the strong coupling regime

Elyahou Kapon, Alok Rudra, Benjamin Dwir, Alessio Massimiliano Davide Miranda

Precise positioning of single site-controlled inverted pyramidal InGaAs quantum dots (QDs) at the antinode of a GaAs photonic crystal cavity with nanometer-scale accuracy holds unique advantages compared to self-assembled QDs and offers great promise for p ...

Aip Publishing2023