Photon-trapping array for enhanced midwave infrared photoresponse

2021 ◽  
Vol 54 (50) ◽  
pp. 505105
Author(s):  
Fei Suo ◽  
Jinchao Tong ◽  
Dao Hua Zhang
Keyword(s):  
Midwave Infrared ◽  
Photon Trapping

scholarly journals AT2ES: Simultaneous Atmospheric Transmittance-Temperature-Emissivity Separation Using Online Upper Midwave Infrared Hyperspectral Images

2021 ◽  
Vol 13 (7) ◽  
pp. 1249
Author(s):  
Sungho Kim ◽  
Jungsub Shin ◽  
Sunho Kim
Keyword(s):  
Air Temperature ◽  
Atmospheric Correction ◽  
Hyperspectral Data ◽  
Hyperspectral Images ◽  
Co2 Absorption ◽  
Infrared Band ◽  
Data Regression ◽  
Midwave Infrared ◽  
Novel Method ◽  
Atmospheric Transmittance

This paper presents a novel method for atmospheric transmittance-temperature-emissivity separation (AT2ES) using online midwave infrared hyperspectral images. Conventionally, temperature and emissivity separation (TES) is a well-known problem in the remote sensing domain. However, previous approaches use the atmospheric correction process before TES using MODTRAN in the long wave infrared band. Simultaneous online atmospheric transmittance-temperature-emissivity separation starts with approximation of the radiative transfer equation in the upper midwave infrared band. The highest atmospheric band is used to estimate surface temperature, assuming high emissive materials. The lowest atmospheric band (CO2 absorption band) is used to estimate air temperature. Through onsite hyperspectral data regression, atmospheric transmittance is obtained from the y-intercept, and emissivity is separated using the observed radiance, the separated object temperature, the air temperature, and atmospheric transmittance. The advantage with the proposed method is from being the first attempt at simultaneous AT2ES and online separation without any prior knowledge and pre-processing. Midwave Fourier transform infrared (FTIR)-based outdoor experimental results validate the feasibility of the proposed AT2ES method.

Standoff midwave infrared hyperspectral imaging of ship plumes

2016 ◽  
Author(s):  
Marc-André Gagnon ◽  
Jean-Philippe Gagnon ◽  
Pierre Tremblay ◽  
Simon Savary ◽  
Vincent Farley ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
Midwave Infrared

CURRENT INDUCED ENTANGLEMENT OF DOUBLE QUANTUM DOT EXCITONS

2003 ◽  
Vol 02 (06) ◽  
pp. 527-534
Author(s):  
YUEH-NAN CHEN ◽  
DER-SAN CHUU
Keyword(s):  
Quantum Dot ◽  
Cavity Length ◽  
Oscillatory Behavior ◽  
Entangled State ◽  
Double Quantum ◽  
Single Photons ◽  
Purcell Effect ◽  
Double Quantum Dot ◽  
Photon Trapping

We propose to measure Purcell effect by observing the current through a semeiconductor quantum dot embedded inside a microcavity. The stationary current is shown to be altered if one varies the cavity length. For the double-dot system, we find that the stationary current shows oscillatory behavior as one varies the inter-dot distance. Furthermore, the current is suppressed if the dot distance is small compared to the wavelength of the emitted photon. This photon trapping phenomenon generates the entangled state and may be used to control the emission of single photons at predetermined times.

Influence of proton radiation on the minority carrier lifetime in midwave infrared InAs/InAsSb superlattices

2016 ◽  
Vol 108 (26) ◽  
pp. 263504 ◽  
Author(s):  
L. Höglund ◽  
D. Z. Ting ◽  
A. Khoshakhlagh ◽  
A. Soibel ◽  
A. Fisher ◽  
...  
Keyword(s):  
Carrier Lifetime ◽  
Minority Carrier ◽  
Minority Carrier Lifetime ◽  
Proton Radiation ◽  
Midwave Infrared

The need for deep etching to fabricate Ga-free InAs/InAsSb T2SL XBn midwave infrared photodetector?

2021 ◽  
Author(s):  
Maxime Bouschet ◽  
Vignesh Arounassalame ◽  
Rodolphe Alchaar ◽  
Clara Bataillon ◽  
Jean-Philippe Perez ◽  
...  
Keyword(s):  
Infrared Photodetector ◽  
Deep Etching ◽  
Midwave Infrared

Development of a Cryogenic Test Bench for Spectral MTF Measurement on Midwave Infrared Focal Plane Arrays

2020 ◽  
Vol 49 (11) ◽  
pp. 6957-6962
Author(s):  
Edouard Huard ◽  
Sophie Derelle ◽  
Julien Jaeck ◽  
Olivier Gravrand ◽  
Jérôme Primot
Keyword(s):  
Focal Plane ◽  
Test Bench ◽  
Focal Plane Arrays ◽  
Infrared Focal Plane Arrays ◽  
Midwave Infrared

scholarly journals Structural, Optical and Electrical Characterizations of Midwave Infrared Ga-Free Type-II InAs/InAsSb Superlattice Barrier Photodetector

Photonics ◽  
2020 ◽  
Vol 7 (3) ◽  
pp. 76
Author(s):  
U. Zavala-Moran ◽  
M. Bouschet ◽  
J. Perez ◽  
R. Alchaar ◽  
S. Bernhardt ◽  
...  
Keyword(s):  
Current Density ◽  
Dark Current ◽  
Spectral Response ◽  
Minority Carrier Lifetime ◽  
Peak Position ◽  
Type Ii ◽  
Dark Current Density ◽  
Time Resolved ◽  
Midwave Infrared ◽  
Electrical Characterizations

In this paper, a full set of structural, optical and electrical characterizations performed on midwave infrared barrier detectors based on a Ga-free InAs/InAsSb type-II superlattice, grown by molecular beam epitaxy (MBE) on a GaSb substrate, are reported and analyzed. a Minority carrier lifetime value equal to 1 µs at 80 K, carried out on dedicated structure showing photoluminescence peak position at 4.9 µm, is extracted from a time resolved photoluminescence measurement. Dark current density as low as 3.2 × 10−5 A/cm2 at 150 K is reported on the corresponding device exhibiting a 50% cut-off wavelength around 5 µm. A performance analysis through normalized spectral response and dark current density-voltage characteristics was performed to determine both the operating bias and the different dark current regimes.

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