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We propose a new guide mode resonant photodiode demonstrating better sensitivity for the infrared imaging. This comprises a backside dielectric sub-wavelength periodic structure and an absorbing region as thin as 90 nm. In this study, electro-optical characterizations of individual InGaAs detector featuring focal-plane array-compatible geometries are fully explained by electro-magnetic simulations...
An 18-band k.p formalism has been developed to determine the band structure and wavefunctions of InAs/GaSb type II superlattices (T2SL). Bandgap results are in good agreement with measurements for symetrical superlattices. Thus, we are able to calculate intrinsic properties of InAs/GaSb SL as the effective mass, the density of state and the free carrier concentration. Then we compare the modelled...
Two-photon absorption is a third-order process and, as such, displays a quadratic dependence relatively to the incident light intensity. This TPA process has been harnessed in a new generation of ultrafast light intensity correlator setups [1,2]. This quadratic dependence of the photocurrent to the sub-bandgap light intensity has been checked in various semiconductor-based devices, and verified over...
Summary form only given. Tunable mid-infrared light is an efficient tool for probing molecular structures and medium energy bondings in various materials. Cr2+-dopped ZnSe is widely used for diode-pumped laser operation in the 2-3mum wavelength range. Due to its electrical properties, this material is also identified as a good candidate for electrically pumped emission. We report mid-infrared electroluminescence...
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