J
John K. Liu
Researcher at California Institute of Technology
Publications - 112
Citations - 1936
John K. Liu is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Quantum well infrared photodetector & Quantum well. The author has an hindex of 23, co-authored 112 publications receiving 1857 citations. Previous affiliations of John K. Liu include Jet Propulsion Laboratory.
Papers
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Journal ArticleDOI
640/spl times/486 long-wavelength two-color GaAs/AlGaAs quantum well infrared photodetector (QWIP) focal plane array camera
Sarath D. Gunapala,Sumith V. Bandara,Anjali Singh,John K. Liu,B. Rafol,Edward M. Luong,Jason M. Mumolo,N.Q. Tran,D. Z. Ting,J.D. Vincent,C. A. Shott,J. Long,Paul D. LeVan +12 more
TL;DR: In this paper, an optimized longwavelength/very-long wavelength two-color quantum well infrared photodetector (QWIP) device structure was designed and fabricated on a 3-in semi-insulating GaAs substrate by molecular beam epitaxy (MBE).
Journal ArticleDOI
1024 × 1024 pixel mid-wavelength and long-wavelength infrared QWIP focal plane arrays for imaging applications
Sarath D. Gunapala,Sumith V. Bandara,John K. Liu,Cory J. Hill,Sir B. Rafol,Jason M. Mumolo,J. T. Trinh,Meimei Z. Tidrow,Paul D. LeVan +8 more
TL;DR: In this paper, the performance in terms of quantum efficiency, NE(delta)T, uniformity, operability and modulation transfer functions were discussed for both MWIR and LWIR focal planes.
Journal ArticleDOI
640 $\,\times\,$ 512 Pixels Long-Wavelength Infrared (LWIR) Quantum-Dot Infrared Photodetector (QDIP) Imaging Focal Plane Array
Sarath D. Gunapala,Sumith V. Bandara,Cory J. Hill,D. Z. Ting,John K. Liu,B. Rafol,E.R. Blazejewski,Jason M. Mumolo,Sam A. Keo,Sanjay Krishna,Yia-Chung Chang,C. A. Shott +11 more
TL;DR: In this article, self-assembled InAs-InGaAs-GaAs quantum dots are exploited for the development of large-format long-wavelength infrared focal plane arrays (FPAs).
Journal ArticleDOI
9-/spl mu/m cutoff 256/spl times/256 GaAs/Al/sub x/Ga/sub 1-x/As quantum well infrared photodetector hand-held camera
Sarath D. Gunapala,John K. Liu,Jin S. Park,M. Sundaram,C. A. Shott,Theodore R. Hoelter,True-Lon Lin,S. T. Massie,Paul D. Maker,Richard E. Muller,Gabby Sarusi +10 more
TL;DR: In this paper, a very sensitive long wavelength infrared (LWIR) camera based on a GaAs/AlGaAs QWIP focal plane array and its performance in quantum efficiency, NE/spl Delta/T, minimum resolvable temperature (MRTD), uniformity, and operability was discussed.
Journal ArticleDOI
Submonolayer quantum dot infrared photodetector
David Z. Ting,Sumith V. Bandara,Sarath D. Gunapala,Jason M. Mumolo,Sam A. Keo,Cory J. Hill,John K. Liu,E.R. Blazejewski,Sir B. Rafol,Yia-Chung Chang +9 more
TL;DR: In this article, the concept of the submonolayer quantum dot infrared photodetector (SML QDIP) was described and the experimental device results on long-wavelength infrared detection were reported.