Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Senthil Annamalai"'
Autor:
Mingguo Liu, Sanjay Krishna, Darren Forman, Philip Dowd, Daniel N. Carothers, P.M. Varangis, Joe C. Campbell, J. Zilko, Senthil Annamalai, Tom Tumolillo, K. Sun, A.L. Gray
Publikováno v:
physica status solidi c. 3:439-443
Novel InAs/InGaAs quantum dots-in-a-well (DWELL) infrared photodetectors are described. These detectors, in which the active region consists of InAs quantum dots embedded in an InGaAs quantum well, represent a hybrid between a conventional quantum we
Publikováno v:
AIChE Journal. 42:2295-2302
Four varieties of limestone distinguished on the basis of pore-size distributions were exposed in dynamic 10-, 20- and 50-ppm SO{sub 2} atmospheres for up to 500 h at 25 C and 100% rh. The resulting conversion of the limestone was measured as a funct
Publikováno v:
SPIE Proceedings.
Optimization of various growth parameters for Type-II GaSb (10MLs)/InAs(10MLs) nanoscale superlattices (SL) and GaSb layers, grown by solid molecular beam epitaxy, has been undertaken. We present optical and structural characterization for these hete
Autor:
Oskar Painter, Orion Crisafulli, Raviv Perahia, K. T. Posani, N. R. Weisse-Bernstein, V. Tripathi, Sanjay Krishna, Senthil Annamalai
We report high performance infrared sensors that are based on intersubband transitions in nanoscale self-assembled quantum dots combined with a microcavity resonator made with a high-index-contrast two-dimensional photonic crystal. The addition of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f30ac5ad91b728deac819dd80d81e5cf
https://resolver.caltech.edu/CaltechAUTHORS:POSapl06
https://resolver.caltech.edu/CaltechAUTHORS:POSapl06
Autor:
K. T. Posani, Oskar Painter, Senthil Annamalai, Raviv Perahia, Sanjay Krishna, Vaibhav Tripathi, Orion Crisafulli
In this paper we report the use of a photonic crystal resonant cavity to increase the quantum efficiency, detectivity (D*) and the background limited infrared photodetector (BLIP) temperature of a quantum dot detector. The photonic crystal is incorpo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d78ff7bfc878ff3a82af6d9fb62af99f
https://resolver.caltech.edu/CaltechAUTHORS:20180709-163430790
https://resolver.caltech.edu/CaltechAUTHORS:20180709-163430790
Autor:
Sanjay Krishna, P.M. Varangis, Mingguo Liu, Tom Tumolillo, Darren Forman, Senthil Annamalai, Philip Dowd, Daniel N. Carothers, K. Sun, Joe C. Campbell, A.L. Gray
Publikováno v:
SPIE Proceedings.
We report the first two-color 320 x 256 infrared Focal Plane Array (FPA), based on a voltage-tunable InAs/InGaAs/GaAs DWELL structure. The detectors, grown by solid source molecular beam epitaxy (MBE) comprise of a 15-stack asymmetric DWELL structure
Publikováno v:
2005 IEEE LEOS Annual Meeting Conference Proceedings.
This paper reports the use a photonic crystal resonant cavity to increase the quantum efficiency, detectivity, and the background limited infrared photodetector temperature of the quantum dot detector. The results of spectral response measurements of
Autor:
Unal Sakoglu, Zhipeng Wang, Philip Dowd, J. Scott Tyo, Majeed M. Hayat, Sanjay Krishna, Senthil Annamalai
Publikováno v:
Nanosensing: Materials and Devices.
Quantum-dot infrared photodetectors (QDIPs), based on intersubband transitions in nanoscale self-assembleddots, are perceived as a promising technology for mid-infrared-regime sensing since they are based on a matureGaAs technology, are sensitive to
Real-time implementation of matched filtering algorithms using adaptive focal-plane array technology
Autor:
Sanjay Krishna, Philip Dowd, Majeed M. Hayat, Unal Sakoglu, Senthil Annamalai, Zhipeng Wang, Nina-Rae Weisse-Bernstein, J. Scott Tyo
Publikováno v:
SPIE Proceedings.
Spectrally tunable quantum-dot infrared photodetectors (QDIPs) can be used to approximate multiple spectral responses with the same focal-plane array. Hence, they exhibit the potential for real time adaptive detection/classification. In the present s
Autor:
Sanjay Krishna, Unal Sakoglu, K. T. Posani, J. Scott Tyo, Philip Dowd, Senthil Annamalai, Majeed M. Hayat
Publikováno v:
Applied Optics. 45:7224
It has recently been reported that by using a spectral-tuning algorithm, the photocurrents of multiple detectors with spectrally overlapping responsivities can be optimally combined to synthesize, within certain limits, the response of a detector wit