Dual-color mid-infrared quantum cascade photodetector in coupled quantum well structure

A. Rostami; A. Motmaen; H. Baghban; H. Rasooli Saghai

doi:10.1117/12.851957

2 December 2009 Dual-color mid-infrared quantum cascade photodetector in coupled quantum well structure

A. Rostami, A. Motmaen, H. Baghban, H. Rasooli Saghai

Proceedings Volume 7631, Optoelectronic Materials and Devices IV; 76310L (2009) https://doi.org/10.1117/12.851957
Event: Asia Communications and Photonics, 2009, Shanghai, Shanghai , China

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.

Citation Download Citation

A. Rostami, A. Motmaen, H. Baghban, and H. Rasooli Saghai "Dual-color mid-infrared quantum cascade photodetector in coupled quantum well structure", Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76310L (2 December 2009); https://doi.org/10.1117/12.851957

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