Demonstration and performance assessment of large format InP-InGaAsP quantum-well infrared photodetector focal plane array

Date

2007-07-01

Author

Ozer, S.
Tümkaya, Umman
Asici, B.
Beşikci, Cengiz

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There have been various studies showing that InP-InGaAs quantum-well infrared photodetectors (QWIPs) are potential alternatives to AlGaAs-GaAs QWIPs in the long wavelength infrared (LWIR) band, especially for applications requiring high responsivity. Being on InP substrate, this material system also offers lattice matched mid-wavelength infrared (MWIR)/LWIR dual band QWIP stack when it is used with the AlInAs-InGaAs system. It is desirable to extend the cut-off wavelength of Inp based LWIR QWIPs to similar to 9 mu m, which can be accomplished by replacing the QW material with InGaAsP. In this paper, we report the first InP-InGaAsP QWIP focal plane array (FPA). The 640 x 512 FPA displayed remarkably low noise equivalent temperature difference (NETD) with very short integration times'(46 mK at 66 K with T-int = 440 mu s and f/1.5 optics). The results show that these QWIPs can be operated with high responsivity (> 1 A/W) while offering bias adjustable gain in a wide range where the detectivity is almost constant at a reasonably high level.

Subject Keywords

Electrical and Electronic Engineering, Atomic and Molecular Physics, and Optics, Condensed Matter Physics

URI

https://hdl.handle.net/11511/38304

Journal

IEEE JOURNAL OF QUANTUM ELECTRONICS

DOI

https://doi.org/10.1109/jqe.2007.900253

Collections

Department of Basic English, Article

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Citation Formats

S. Ozer, U. Tümkaya, B. Asici, and C. Beşikci, “Demonstration and performance assessment of large format InP-InGaAsP quantum-well infrared photodetector focal plane array,” IEEE JOURNAL OF QUANTUM ELECTRONICS, pp. 709–713, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38304.