Highly selective two-color mid-wave and long-wave infrared detector hybrid based on Type-II superlattices.
Opt Lett
; 37(22): 4744-6, 2012 Nov 15.
Article
en En
| MEDLINE
| ID: mdl-23164899
ABSTRACT
We report a two-color mid-wave infrared (MWIR) and long-wave infrared (LWIR) co-located detector with 3 µm active region thickness per channel that is highly selective and can perform under high operating temperatures for the MWIR band. Under back-side illumination, a temperature evolution study of the MWIR detector's electro-optical performance found the 300 K background-limit with 2π field-of-view to be achieved below operating temperatures of 160 K, at which the temperature's 50% cutoff wavelength was 5.2 µm. The measured current reached the system limit of 0.1 pA at 110 K for 30 µm pixel-sized diodes. At 77 K, where the LWIR channel operated with a 50% cutoff wavelength at 11.2 µm, an LWIR selectivity of ~17% was achieved in the MWIR wave band between 3 and 4.7 µm, making the detector highly selective.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Opt Lett
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos