Comment on “Lateral photocurrent spreading in single quantum well infrared photodetectors” [Appl. Phys. Lett. 72, 2865 (1998)]

Photocurrent noise in multi-quantum-well infrared photodetectors

We report on photocurrent noise in AlGaAs/GaAs quantum-well infrared photodetectors having nominally the same design, except the number of wells N . The power spectral density does not scale as the inverse of the number of wells N in the presence of infrared radiation. These features can be understood by taking into account the nonlinearity arising at high infrared power as a consequence of the...

Noise in single quantum well infrared photodetectors

The noise of the dark current and photocurrent is an important factor in operation of the quantum well infrared photodetectors ~QWIPs!. For typical operating conditions, the main source of fluctuations in QWIPs is generationrecombination noise associated with the excitation of carriers from the QWs into the continuum and their capture into the QWs. For applications the study of noise in QWIPs i...

Normal Incidence Mid-Infrared Photocurrent in AlGaN/GaN Quantum Well Infrared Photodetectors

B. Sherliker, M.P. Halsalla,∗, P. Harrison, V.D. Jovanović, D. Indjin, Z. Ikonić, P.J. Parbrook, M.A. Whitehead, T. Wang, P.D. Buckle, J. Phillips and D. Carder Department of Physics, UMIST, Manchester M60 1QD, UK Department of Electronic and Electrical Engineering, The University of Leeds LS2 9JT, UK EPSRC National Centre for III–V Technologies Department of Electronic and Electrical Engineeri...

Polarization Dependence of Photocurrent in Quantum-Dot Infrared Photodetectors

T. Gebhard1, P.L. Souza1,2, F.F. Schrey1, G. Strasser1, K. Unterrainer1, M.P. Pires3, S.M. Landi2, J.M. Villas-Boas4, N. Studart5 1Photonics Institute and Center for Microand Nanostructures, TU-Wien, A-1040 Vienna, Austria 2LabSem, CETUC, PUC-Rio,Rua Marquês de Sao Vicente 225, Rio de Janeiro, 22451-900, Brazil 3Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil...

Increased normal incidence photocurrent in quantum dot infrared photodetectors