30 years of the quantum cascade laser [PDF]
Communications PhysicsIt was January 1994, when the first quantum cascade laser (QCL) displayed laser action in Bell Laboratories. During these 30 years the QCL evolved incessantly, from a lab curiosity to the main on-chip source of coherent radiation in the Mid-IR and THz ...
Giacomo Scalari, Jérôme Faist
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Comparison of Physical and System Factors Impacting Hydration Sensing in Leaves Using Terahertz Time-Domain and Quantum Cascade Laser Feedback Interferometry Imaging [PDF]
Sensors, 2023 To reduce the water footprint in agriculture, the recent push toward precision irrigation management has initiated a sharp rise in photonics-based hydration sensing in plants in a non-contact, non-invasive manner.
Khushboo Singh +11 more
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Low-threshold terahertz molecular laser optically pumped by a quantum cascade laser
APL Photonics, 2016 We demonstrate a low-threshold, compact, room temperature, and continuous-wave terahertz molecular laser optically pumped by a mid-infrared quantum cascade laser. These characteristics are obtained, thanks to large dipole transitions of the active medium:
A. Pagies, G. Ducournau, J.-F. Lampin
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Continuous-wave GaAs/AlGaAs quantum cascade laser at 5.7 THz [PDF]
NanophotonicsDesign strategies for improving terahertz (THz) quantum cascade lasers (QCLs) in the 5–6 THz range are investigated numerically and experimentally, with the goal of overcoming the degradation in performance that occurs as the laser frequency approaches ...
Shahili Mohammad +5 more
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Photonics, 2022 The topic of external optical feedback in quantum-cascade lasers is relevant for stability and beam-properties considerations. Albeit less sensitive to external optical feedback than other lasers, quantum-cascade lasers can exhibit several behaviors ...
Olivier Spitz +2 more
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Quantum cascade laser: 30 years of discoveries [PDF]
NanophotonicsVitiello Miriam S. +3 more
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MOVPE Technology of Fe-Compensated In PLayers for the Quantum Cascade Laser Applications [PDF]
International Journal of Electronics and Telecommunications, 2020 Quantum cascade laser is one of the most sophisticated semiconductor devices. Its technology requires extremely high precision and layers quality. Device performance is limited by thermal extraction form laser core.
Mikołaj Badura
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Coherent averaging quantum cascade laser based dual-comb spectrometer with near infrared light illumination control [PDF]
EPJ Web of Conferences, 2023 We present a dual-comb spectrometer based on quantum cascade lasers operating at 7.7 µm with a stabilization scheme that enables coherent averaging. We show that by illuminating a low cost near-infrared light source of the front facet of the quantum ...
Parriaux Alexandre +6 more
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MOVPE-Grown Quantum Cascade Laser Structures Studied by Kelvin Probe Force Microscopy
Crystals, 2020 A technique for direct study of the distribution of the applied voltage within a quantum cascade laser (QCL) has been developed. The detailed profile of the potential in the laser claddings and laser core region has been obtained by gradient scanning ...
Konstantin Ladutenko +3 more
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Broadband THz quantum cascade laser frequency combs with surface emission and inverse-designed facet reflectors [PDF]
EPJ Web of Conferences, 2023 We present a planarized waveguide cavity with an integrated broadband output coupler that improves both the output power and far-field properties of THz quantum cascade laser frequency combs. The laser mirror reflectivity can be tuned by the shape of the
Senica Urban +5 more
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