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Proceedings Paper

Dual-color mid-infrared quantum cascade photodetector in coupled quantum well structure
Author(s): A. Rostami; A. Motmaen; H. Baghban; H. Rasooli Saghai
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Paper Abstract

In this paper, a novel structure for detection of two different wavelengths in mid-infrared region is proposed. By attaching a capturing well to the active region, a common transportation path for electron excited by two different wavelengths is introduced. Calculated values for responsivity and detectivity in the designed Quantum Cascade Photodetector structure at 120K are: R1 (λ=6.85μ m) =67.5 mA/W, R2 (λ=12.35μ m) =118.5mA/W and D1 (λ=6.85) =6.89×107J, D2 (λ=12.35) =1.2×108J, respectively.

Paper Details

Date Published: 2 December 2009
PDF: 10 pages
Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76310L (2 December 2009); doi: 10.1117/12.851957
Show Author Affiliations
A. Rostami, Univ. of Tabriz (Iran, Islamic Republic of)
A. Motmaen, Islamic Azad Univ. Tabriz Branch (Iran, Islamic Republic of)
H. Baghban, Univ. of Tabriz (Iran, Islamic Republic of)
H. Rasooli Saghai, Univ. of Tabriz (Iran, Islamic Republic of)

Published in SPIE Proceedings Vol. 7631:
Optoelectronic Materials and Devices IV
Jian-Jun He; Guang-Hua Duan; Fumio Koyama; Ming C. Wu, Editor(s)

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