Abstract
We report the demonstration of a two-color infrared focal plane array based on a voltage-tunable quantum dots-in-well (DWELL) design. The active region consists of multiple layers of InAs quantum dots in an In0.15Ga0.85As quantum well. Spectral response measurements yielded a peak at 5.5μm for lower biases and at 8–10μm for higher biases. Using calibrated blackbody measurements, the midwavelength and long wavelength specific detectivity (D*) were estimated to be 7.1×1010cmHz1∕2∕W(Vb=1.0V) and 2.6×1010cmHz1∕2∕W(Vb=2.6V) at 78 K, respectively. This material was processed into a 320×256 array and integrated with an Indigo 9705 readout chip and thermal imaging was achieved at 80 K.
Bibliography
Krishna, S., Forman, D., Annamalai, S., Dowd, P., Varangis, P., Tumolillo, T., Gray, A., Zilko, J., Sun, K., Liu, M., Campbell, J., & Carothers, D. (2005). Demonstration of a 320Ã256 two-color focal plane array using InAs/InGaAs quantum dots in well detectors. Applied Physics Letters, 86(19).
Authors
12
- Sanjay Krishna (first)
- Darren Forman (additional)
- Senthil Annamalai (additional)
- Philip Dowd (additional)
- Petros Varangis (additional)
- Tom Tumolillo (additional)
- Allen Gray (additional)
- John Zilko (additional)
- Kathy Sun (additional)
- Mingguo Liu (additional)
- Joe Campbell (additional)
- Daniel Carothers (additional)
References
11
Referenced
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Dates
Type | When |
---|---|
Created | 20 years, 3 months ago (April 29, 2005, 6:57 p.m.) |
Deposited | 2 years ago (July 24, 2023, 3:46 a.m.) |
Indexed | 3 weeks, 3 days ago (July 30, 2025, 6:45 a.m.) |
Issued | 20 years, 3 months ago (May 2, 2005) |
Published | 20 years, 3 months ago (May 2, 2005) |
Published Online | 20 years, 3 months ago (May 2, 2005) |
Published Print | 20 years, 3 months ago (May 9, 2005) |
@article{Krishna_2005, title={Demonstration of a 320×256 two-color focal plane array using InAs/InGaAs quantum dots in well detectors}, volume={86}, ISSN={1077-3118}, url={http://dx.doi.org/10.1063/1.1924887}, DOI={10.1063/1.1924887}, number={19}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Krishna, Sanjay and Forman, Darren and Annamalai, Senthil and Dowd, Philip and Varangis, Petros and Tumolillo, Tom and Gray, Allen and Zilko, John and Sun, Kathy and Liu, Mingguo and Campbell, Joe and Carothers, Daniel}, year={2005}, month=may }