Title :
Dual-color mid-infrared Quantum Cascade Photodetector in coupled quantum well structure
Author :
Rostami, A. ; Motmaen, A. ; Baghban, H. ; Saghai, H.Rasooli
Author_Institution :
Photonics and Nanocrystals Research Lab. (PNRL), Faculty of Electrical and Computer Engineering, University of Tabriz, 51664, Iran
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=6.85µm) =67.5mA W, R2 (λ=12.35µm) =118.5mA/W and D*1 (λ=6.85) =6.89×107 J , D*1 (λ=12.35 =1.2×108 J , respectively.
Keywords :
Detectors; Electrons; Joining processes; Nanocrystals; Optical computing; Photodetectors; Photonics; Quantum computing; Superlattices; Transportation;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
