Type-II InAs/GaSb superlattices for dual color infrared detection
| Autor: | Eric Costard, Carl Asplund, Anders Gamfeldt, Linda Höglund, Hithesh K. Gatty, Rickard Marcks von Würtemberg |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Pixel business.industry Infrared Superlattice Detector 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Gallium antimonide chemistry.chemical_compound Wavelength Optics chemistry 0103 physical sciences Optoelectronics Indium arsenide 0210 nano-technology business Absorption (electromagnetic radiation) |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | Midwave-midwave dual color detection has been successfully demonstrated by using pixel filters fabricated on top of InAs/GaSb focal plane arrays (FPAs). The pixel filters used in these FPAs were designed to transmit infrared radiation in the 3.5 - 4.1 μm wavelength region and to completely block light shorter than 3.5 μm. By comparing the signals of filtered and unfiltered pixels, excellent contrast between the two bands were obtained. This design concept offers a great flexibility to tailor the transmission window to any wavelength range within the 3-5 μm wavelength region. In particular, this dual color detector concept has been used for gas detection of volatile organic compounds which have main absorption peaks at 3.3 μm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|