| タイトル | 640 x 512 Pixels Long-Wavelength Infrared (LWIR) Quantum-Dot Infrared Photodetector (QDIP) Imaging Focal Plane Array |
| 著者（英） | Keo, Sam A.; Blazejewski, Edward R.; Hill, Cory J.; Mumolo, Jason M.; Ting, David Z.; Bandara, Sumith V.; Liu, John K.; Rafol, Sir B.; Shott, Craig A.; Chang, Y. -C.; Gunapala, Sarath D.; Krishna, Sanjay |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 2007-03-03 |
| 言語 | eng |
| 内容記述 | Epitaxially grown self-assembled. InAs-InGaAs-GaAs quantum dots (QDs) are exploited for the development of large-format long-wavelength infrared focal plane arrays (FPAs). The dot-in-a-well (DWELL) structures were experimentally shown to absorb both 45 degrees and normal incident light, therefore, a reflection grating structure was used to enhance the quantum efficiency. The devices exhibit peak responsivity out to 8.1 micrometers, with peak detectivity reaching approximately 1 X 10(exp 10) Jones at 77 K. The devices were fabricated into the first long-wavelength 640 x 512 pixel QD infrared photodetector imaging FPA, which has produced excellent infrared imagery with noise equivalent temperature difference of 40 mK at 60-K operating temperature. |
| NASA分類 | Instrumentation and Photography |
| 権利 | Copyright |
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