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)=67.5 mA/W, R2(λ=12.35µm)=118.5mA/W and D*1 (λ=6.85)=6.89×107J, D*2 (λ=12.35)=1.2×108J, respectively.
Keywords :
Dark current; Detectors; Electrons; Photoconductivity; Photodetectors; Photovoltaic systems; Quantum cascade lasers; Quantum computing; Solar power generation; Temperature; Capturing well; Detectivity; Dual-color; Mid-infrared; Quantum cascade detector;
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
