Simon Ferré
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View article: Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging
Photoconductive focal plane array based on HgTe quantum dots for fast and cost-effective short-wave infrared imaging Open
Image (left) acquired using a camera which active layer is a photoconductive layer fabricated from a HgTe nanocrystal film (schematic on right).
View article: Electroluminescence from HgTe Nanocrystals and Its Use for Active Imaging
Electroluminescence from HgTe Nanocrystals and Its Use for Active Imaging Open
Mercury telluride (HgTe) nanocrystals are among the most versatile infrared (IR) materials with the absorption of lowest energy optical absorption which can be tuned from the visible to the terahertz range. Therefore, they have been extens…
View article: Infrared narrow band gap nanocrystals: recent progresses relative to imaging and active detection
Infrared narrow band gap nanocrystals: recent progresses relative to imaging and active detection Open
Current technologies for infrared detection have been based on epitaxially grown semiconductors. Here we review some of the recent developments relative to colloidal nanocrystals and their use as building blocks for the design of low-cost …
View article: HgTe Nanocrystals for SWIR Detection and Their Integration up to the Focal Plane Array
HgTe Nanocrystals for SWIR Detection and Their Integration up to the Focal Plane Array Open
Infrared applications remain too often a niche market due to their prohibitive cost. Nanocrystals offer an interesting alternative to reach cost disruption especially in the short-wave infrared (SWIR, λ < 1.7 μm) where material maturity is…
View article: Comparative study of SiO_2, Si_3N_4 and TiO_2 thin films as passivation layers for quantum cascade lasers
Comparative study of SiO_2, Si_3N_4 and TiO_2 thin films as passivation layers for quantum cascade lasers Open
The aim of this article is to determine the best dielectric between SiO2, Si3N4 and TiO2 for quantum cascade laser (QCL) passivation layers depending on the operation wavelength. It relies on both Mueller ellipsometry measurement to accura…
View article: Estimating optical feedback from a chalcogenide fiber in mid-infrared quantum cascade lasers
Estimating optical feedback from a chalcogenide fiber in mid-infrared quantum cascade lasers Open
The amount of optical feedback originating from a chalcogenide fiber used to couple light from a mid-infrared quantum cascade laser is evaluated experimentally. Threshold reduction measurements on the fibered laser, combined with an analyt…
View article: Highly birefringent chalcogenide optical fiber for polarization-maintaining in the 3-85 µm mid-IR window
Highly birefringent chalcogenide optical fiber for polarization-maintaining in the 3-85 µm mid-IR window Open
A highly birefringent polarization-maintaining chalcogenide microstructured optical fiber (MOF) covering the 3-8.5 µm wavelength range has been realized for the first time. The fiber cross-section consists of 3 rings of circular air holes …