Publications by Jérôme Faist

Terahertz waveform synthesis in integrated thin-film lithium niobate platform

Jérôme Faist, Ileana-Cristina Benea-Chelmus, Francesca Fabiana Settembrini

Bridging the "terahertz gap" relies upon synthesizing arbitrary waveforms in the terahertz domain enabling applications that require both narrow band sources for sensing and few-cycle drives for classical and quantum objects. However, realization of custom ...

Nature Portfolio2023

Glass-in-glass infiltration for 3D micro-optical composite components

Yves Bellouard, Andreas Mortensen, Jérôme Faist, Enrico Casamenti, Luciano Borasi, Gözden Torun, Mathieu Bertrand

Chalcogenide glass exhibits a wide transmission window in the infrared range, a high refractive index, and nonlinear optical properties; however, due to its poor mechanical properties and low chemical and environmental stability, producing three-dimensiona ...

2022

Roadmap on multimode light shaping

Jérôme Faist, Tobias Kippenberg, Marco Piccardo

Our ability to generate new distributions of light has been remarkably enhanced in recent years. At the most fundamental level, these light patterns are obtained by ingeniously combining different electromagnetic modes. Interestingly, the modal superpositi ...

IOP Publishing Ltd2022

Interaction between meta-materials and shallow donors in bulk GaN at THz frequency

Jérôme Faist, Nicolas Grandjean, Etienne François Olivier Giraud

We report the coupling and interaction between shallow donors and microcavities in bulk GaN at THz frequencies. At 4K, the shallow donors lead to an absorption at 23.5 meV (5.7 THz) under optical pumping above the bandgap of GaN. The microcavities are base ...

Optical Soc Amer2014

Continuous-wave vertically emitting photonic crystal terahertz laser

Romuald Houdré, Jérôme Faist, Christopher Bonzon, Zhaolu Diao

Compact semiconductor light sources with high performance continuous-wave (CW) and single mode operation are highly demanded for many applications in the terahertz (THz) frequency range. Distributed feedback (DFB) and photonic crystal (PhC) quantum cascade ...

Wiley-VCH Verlag Berlin2013

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

Elyahou Kapon, Alok Rudra, Jérôme Faist, 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

Photocurrent spectroscopy of site-controlled pyramidal quantum dots

Benjamin Dwir, Elyahou Kapon, Alok Rudra, Jérôme Faist, 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

Surface emitting Terahertz Photonic Crystal Quantum Cascade Laser realized by Bragg boundary condition

Romuald Houdré, Jérôme Faist, Christopher Bonzon, Zhaolu Diao

We theoretically and experimentally investigate a band edge Photonic Crystal (PhC) Quantum Cascade Laser (QCL) operating at 3.1 THz. The surface emission is achieved by using a second-order Bragg grating at the PhC tile boundaries. Highly directional surfa ...

Ieee2012

Complex-coupled photonic crystal THz lasers with independent loss and refractive index modulation

Romuald Houdré, Jérôme Faist, Hua Zhang

Compared to near infra-red photonic crystal (PhC) band-edge lasers, achieving vertical emission with quantum cascade (QC) material operating in the THz range needs dedicated engineering because the TM polarized emission of QCLs favors in-plane emitting sch ...

2011

Design and fabrication technology for high performance electrical pumped terahertz photonic crystal band edge lasers with complete photonic band gap

Romuald Houdré, Jérôme Faist, Hua Zhang

We detail the design and fabrication technology of two-dimensional photonic crystal (PhC) band edge emitting quantum cascade lasers (QCLs) operating at terahertz frequencies (similar to 3.3 THz). The entire QCL active layer has been deeply etched to form a ...

2010

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

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

Nature Publishing Group2010

Record-Low Inhomogeneous Broadening of Site-Controlled Quantum Dots for Nanophotonics

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

Wiley-Blackwell2010

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

Surface plasmon resonance sensor showing enhanced sensitivity for CO2 detection in the mid-infrared range

Andrea Crottini, Lorenzo Sirigu, Jérôme Faist, Sylvain Herminjard, Hans Peter Herzig

We present the first optical sensor based on Surface Plasmon Resonance (SPR) operating in the mid-infrared range. The experimental setup is based on a Kretschmann geometry with Ti/Au layers deposited on a CaF2 prism where light excitation is provided by a ...

2009

Terahertz Quantum Cascade Lasers based on two-dimensional photonic crystal resonators

Romuald Houdré, Marcella Giovannini, Lorenzo Sirigu, Jérôme Faist

We demonstrate high spectral control from surface emitting THz Quantum Cascade Lasers based on a two-dimensional photonic crystal cavity. The perforated top metallic contact acts as an in plane resonator in a tight double-metal plasmonic waveguide providin ...

2008

High-performance bound-to-continuum quantum-cascade lasers for broad-gain applications

Jérôme Faist, Lubos Hvozdara

Based on the bound-to-continuum active region design, we shall present a high performance continuous-wave (CW) quantum-cascade laser. In contrast to high performance lasers based on a two-phonon resonance transition and a narrow linewidth (< 165 cm(-1)), t ...

2008

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

Terahertz photonic crystal quantum cascade lasers

Romuald Houdré, Jérôme Faist, Hua Zhang

We combine photonic crystal and quantum cascade band engineering to create an in-plane laser at terahertz frequency. We demonstrate that such photonic crystal lasers strongly improve the performances of terahertz quantum cascade material in terms of thresh ...

Optical Society of America2007

Design, fabrication and optical characterisation of quantum cascade lasers at terahertz frequencies using photonic crystal reflectors

Romuald Houdré, Marcella Giovannini, Jérôme Faist, Rolando Ferrini, Liza Carol Andrea Dunbar

2005

Photonic Crystals for Far-Infrared Wavelength Quantum Cascade Lasers

Romuald Houdré, Marcella Giovannini, Jérôme Faist, Rolando Ferrini, Liza Carol Andrea Dunbar

2005