K
K. M. S. V. Bandara
Researcher at Bell Labs
Publications - 10
Citations - 329
K. M. S. V. Bandara is an academic researcher from Bell Labs. The author has contributed to research in topics: Quantum well infrared photodetector & Quantum well. The author has an hindex of 7, co-authored 9 publications receiving 321 citations.
Papers
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Journal ArticleDOI
Improved performance of quantum well infrared photodetectors using random scattering optical coupling
TL;DR: In this article, a random scattering reflector on top of a quantum well infrared photodetector was demonstrated to increase the optical coupling by an order of magnitude compared with a one-dimensional grating or 45° angle of incidence geometry.
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Very long wavelength InxGa1−xAs/GaAs quantum well infrared photodetectors
Sarath D. Gunapala,K. M. S. V. Bandara,Barry F. Levine,Gabby Sarusi,Deborah Lee Sivco,A.Y. Cho +5 more
TL;DR: In this paper, a long wavelength (lambda(sub c)=20 microns) quantum well infrared photodetector using nonlattice matched In(x),Ga(l-x)As/GaAs materials system was demonstrated.
Journal Article
Optimization of two dimensional gratings for very long wavelength quantum well infrared photodetectors
Gabby Sarusi,Barry F. Levine,Stephen J. Pearton,K. M. S. V. Bandara,Ronald E. Leibenguth,J. Y. Andersson +5 more
TL;DR: In this article, a detailed study of two-dimensional grating coupling for quantum well infrared photodetectors in the very long wavelength spectral region λ∼16-17 μm was performed.
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Optical and transport properties of single quantum well infrared photodetectors
TL;DR: In this paper, the authors performed an extensive series of measurements on symmetrical barrier bound-to-continuum and asymmetric barrier bound -to-bound quantum well infrared photodetectors consisting of only a single well.
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Tunneling emitter undoped quantum‐well infrared photodetector
TL;DR: In this article, an undoped single-quantum-well infrared photodetector with electron tunneling through the thin emitter barrier is presented, which exhibits a unity optical gain and a dramatic drop in the well carrier density at high bias when the bound state of the well drops below the emitter conduction-band edge.