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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kaldirim, M. Eker, S.U. Arslan, Y. Tumkaya, U. Besikci, C. |
| Copyright Year | 1989 |
| Abstract | We report a large-format (640 times 512) voltage-tunable quantum-well infrared photodetector (QWIP) focal plane array (FPA) for dual-color imaging in the midwavelength infrared (3-5 mum) band. Voltage-tunable spectral response has been achieved through series connection of two eight-well stacks of AlGaAs-InGaAs epilayers grown by molecular beam epitaxy on GaAs substrate. The peak responsivity wavelength of the detectors is shifted from 4.1 mum (color 1) to 4.7 mum (color 2) as the bias is increased within the limit applicable by commercial read-out integrated circuits. The operability of the FPA is ~99.5% with noise equivalent temperature differences of ~60 and 30 mK (f/1.5) in color modes 1 and 2, respectively. To our knowledge, this is the first large-format voltage-tunable dual-color QWIP FPA reported for midwavelength thermal imaging. |
| Sponsorship | IEEE Lasers and Electro-Optics Society |
| Starting Page | 709 |
| Ending Page | 711 |
| Page Count | 3 |
| File Size | 334943 |
| File Format | |
| ISSN | 10411135 |
| Volume Number | 20 |
| Issue Number | 9 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2008-05-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Voltage Quantum wells Photodetectors Colored noise Infrared imaging Optical imaging Molecular beam epitaxial growth Gallium arsenide Substrates Detectors infrared detector Focal plane array (FPA) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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