Explanipedia

Quantum cascade laser frequency comb at λ ≃ 5.3 µm via a double-plasmon waveguide architecture Open

Sargis Hakobyan, Stéphane Blaser, Tobias Gresch, Kevin Oresick, Antoine Müller , et al. · 2025

We demonstrate what we believe to be a novel method for dispersion compensation in short-wavelength quantum cascade lasers (QCLs) for frequency comb operations. The addition of two highly doped InP plasmon layers below and above the active…

Quantum cascade lasers as broadband sources via strong RF modulation Open

Alessio Cargioli, Diego Piciocchi, Mathieu Bertrand, Richard Maulini, Stéphane Blaser , et al. · 2024

In this work, we demonstrate that in a regime of strong modulation, by generating pulses of the length of the order of a few cavity lifetimes (hundreds of ps), a broadband quantum cascade laser can be driven to lase on a bandwidth (250 cm−…

Quantum Cascade Lasers as Broadband Sources via Strong RF Modulation Open

Alessio Cargioli, Diego Piciocchi, Mathieu Bertrand, Richard Maulini, Tobias Gresch , et al. · 2023

In this work, we demonstrate that in a regime of strong modulation, by generating pulses of the length of the order of a few cavity lifetimes (hundreds of ps), a broadband quantum cascade laser can be driven to lase on a bandwidth (250cm-1…

Broadband and fast frequency chirped FTIR spectroscopy with strongly modulated quantum cascade lasers Open

Alessio Cargioli, Diego Piciocchi, Mathieu Bertrand, Richard Maulini, Stéphane Blaser , et al. · 2023

While the opportunity to perform fast and broadband spectroscopy in the Mid-IR portion of the electromagnetic spectrum is very appealing, it requires the use of compatible light-sources. Here, we strongly modulate a Mid-Infrared Quantum Ca…

Waveguide quality inspection in quantum cascade lasers: A capsule neural network approach Open

Abd Al Rahman M. Abu Ebayyeh, Alireza Mousavi, Sebelan Danishvar, Stéphane Blaser, Tobias Gresch , et al. · 2022

High performance quantum cascade laser frequency combs at λ ∼ 6 μm based on plasmon-enhanced dispersion compensation Open

Sargis Hakobyan, Richard Maulini, Stéphane Blaser, Tobias Gresch, Antoine Müller · 2020

We demonstrate quantum cascade laser (QCL) optical frequency combs emitting at λ ∼ 6 μ m. A 5.5 μ m-wide, 4.5 mm-long laser exhibits comb operation from −20 °C up to 50 °C. A maximum output power of 300 mW is achieved at 50 °C showing a ro…

Quantum cascade lasers with discrete and non equidistant extended tuning tailored by simulated annealing Open

Nicolas Villa, Grégory Strübi, Tobias Gresch, Jérémy Butet, Stéphane Blaser , et al. · 2019

In this work, we report a new superstructure grating design method for broad, non-equidistant discrete tuning in quantum cascade lasers using the Vernier effect. Our approach is applied to a wafer with gain centred at ∼7.8 μm. Measu…

Electrically-driven pure amplitude and frequency modulation in a quantum cascade laser Open

Atif Shehzad, Pierre Brochard, Renaud Matthey, Stéphane Blaser, Tobias Gresch , et al. · 2018

We present pure amplitude modulation (AM) and frequency modulation (FM) achieved electrically in a quantum cascade laser (QCL) equipped with an integrated resistive heater (IH). The QCL output power scales linearly with the current applied…

Frequency stability of a dual wavelength quantum cascade laser Open

Ilia Sergachev, Richard Maulini, Tobias Gresch, Stéphane Blaser, A. Bismuto , et al. · 2017

We characterized the dual wavelength operation of a distributed Bragg reflector (DBR) quantum cascade laser (QCL) operating at 4.5 μm using two independent optical frequency discriminators. The QCL emits up to 150 mW fairly evenly distribu…

Mid infrared quantum cascade laser operating in pure amplitude modulation for background-free trace gas spectroscopy Open

Yves Bidaux, A. Bismuto, Pietro Patimisco, Angelo Sampaolo, Tobias Gresch , et al. · 2016

We present a single mode multi-section quantum cascade laser source composed of three different sections: master oscillator, gain and phase section. Non-uniform pumping of the QCL's gain reveals that the various laser sections are strongly…

Gain-guided broad area quantum cascade lasers emitting 235 W peak power at room temperature Open

Ilia Sergachev, Richard Maulini, A. Bismuto, Stéphane Blaser, Tobias Gresch , et al. · 2016

We report gain-guided broad area quantum cascade lasers at 4.55 μm. The devices were processed in a buried heterostructure configuration with a current injector section much narrower than the active region. They demonstrate 23.5 W peak pow…

Frequency Tuning and Modulation of a Quantum Cascade Laser with an Integrated Resistive Heater Open

Kutan Gürel, Stéphane Schilt, A. Bismuto, Yves Bidaux, Camille Haller , et al. · 2016

We present a detailed experimental investigation of the use of a novel actuator for frequency tuning and modulation in a quantum cascade laser (QCL) based on a resistive integrated heater (IH) placed close to the active region. This new ac…

High power and single mode quantum cascade lasers Open

A. Bismuto, Yves Bidaux, Stéphane Blaser, Romain Terazzi, Tobias Gresch , et al. · 2016

We present a single mode quantum cascade laser with nearly 1 W optical power. A buried distributed feedback reflector is used on the back section for wavelength selection. The laser is 6 mm long, 3.5 μm wide, mounted episide-up and the las…

Characterization of a New Frequency Tuning and Modulation Mechanism for Spectroscopy in a Quantum Cascade Laser Open

Kutan Gürel, Stéphane Schilt, A. Bismuto, Yves Bidaux, Camille Haller , et al. · 2016

We present for the first time an investigation of the tuning and modulation properties of a quantum cascade laser with an integrated heater providing a new tuning mechanism. We also show the benefit for spectroscopy applications.

Extended tuning of mid-ir quantum cascade lasers using integrated resistive heaters Open

A. Bismuto, Yves Bidaux, Camille Haller, Romain Terazzi, Tobias Gresch , et al. · 2015

We present single mode quantum cascade lasers including a microscopic heater for spectral emission tuning. Through the use of a buried heater element, the active region temperature can be modified without changing the submount one. Emissio…

High performance, low dissipation quantum cascade lasers across the mid-IR range Open

A. Bismuto, Stéphane Blaser, Romain Terazzi, Tobias Gresch, Antoine Müller · 2015

In this work, we present the development of low consumption quantum cascade lasers across the mid-IR range. In particular, short cavity single-mode lasers with optimised facet reflectivities have been fabricated from 4.5 to 9.2 μm. Thresho…

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