Zobrazeno 31 - 40
of 740
pro vyhledávání: '"77"'
Publikováno v:
SPIE Proceedings.
We realise growth of both GaAsP and GaAs core nanowires (NWs), as well as GaAsP core-shell NWs grown on (111) Si substrates using solid source molecular beam epitaxy (MBE). By modifying the growth conditions it is possible to change the dimensions of
Autor:
Aboozar Mosleh, Thach Pham, Hameed A. Naseem, Baohua Li, Wei Du, Seyed Amir Ghetmiri, John Tolle, Greg Sun, Richard A. Soref, Shui-Qing Yu, Joe Margetis
Publikováno v:
SPIE Proceedings.
Si based Ge1-xSnx photoconductors, with Sn incorporation of 0.9, 3.2, and 7%, were fabricated using a CMOS-compatible process. Temperature dependent study was conducted from 300 to 77 K. The first generation device (standard photoconductor, PD) shows
Autor:
Faebian Bastiman, Robert D. Richards, Chee Hing Tan, Ben White, Ian C. Sandall, John P. R. David
Publikováno v:
Emerging Technologies in Security and Defence II; and Quantum-Physics-based Information Security III.
An InAsBi photodiode has been grown, fabricated and characterized to evaluate its performance in the MWIR region of the spectrum. Spectral response from the diode has been obtained up to a diode temperature of 225 K. At this temperature the diode has
Autor:
Joseph R. Eimer, Michael K. Brewer, David T. Chuss, John Karakla, Rui Shi, John W. Appel, Charles L. Bennett, Joseph Cleary, Sumit Dahal, Rahul Datta, Thomas Essinger-Hileman, Tobias A. Marriage, Carolina Nunez, Matthew A. Petroff, Duncan J. Watts, Edward J. Wollack, Zhilei Xu
Publikováno v:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI.
Polarization modulation is a powerful technique to increase the stability of measurements by enabling the distinction of a polarized signal from dominant slow system drifts and unpolarized foregrounds. Furthermore, when placed as close to the sky as
Publikováno v:
SPIE Proceedings.
Measurements of the polarized radiation often reveal specific physical properties of emission sources, such as strengths and orientations of magnetic fields offered by synchrotron radiation and Zeeman line emission, and the electron density distribut
Publikováno v:
SPIE Proceedings.
The 1.6 μm emission properties originating from the 3 F 3 , 3 F 4 → 3 H 4 transition of Pr 3+ ions in Pr-doped PbCl 2 crystals were investigated for possible application in resonantly-pumped, eye-safe laser development. Pr: PbCl 2 was synthesized
Publikováno v:
Big Data IV: Learning, Analytics, and Applications.
This paper investigates RF-based system for automatic American Sign Language (ASL) recognition. We consider radar for ASL by joint spatio-temporal preprocessing of radar returns using time frequency (TF) analysis and high-resolution receive beamformi
Publikováno v:
SPIE Proceedings.
Time-resolved photoluminescence (TRPL) is used to study the minority carrier lifetime in type-II superlattice (T2SL) infrared detector materials to investigate the recombination mechanisms, trap states and transport properties that currently limit th
Autor:
James McCurdy, Chris Kamilar, Pradip Mitra, M. R. Skokan, Richard Scritchfield, Xiaoli Sun, Terry Welch, Jeffrey D. Beck, Kirk Reiff, James B. Abshire
Publikováno v:
SPIE Proceedings.
A 16 element HgCdTe e-APD detector has been developed for lidar receivers that has significant improvements in sensitivity in the spectral range from < 1μm to 4 μm. A demonstration detector consisting of a 4x4 APD detector array, with 80 μm square
Autor:
Oray Orkun Cellek, Elizabeth H. Steenbergen, Blair C. Connelly, Michael Wraback, Grace D. Metcalfe, Said Elhamri, A. W. K. Liu, Dmitri Lubyshev, Hongen Shen, Yong-Hang Zhang, Joel M. Fastenau, Yueming Qiu
Publikováno v:
SPIE Proceedings.
Temperature-dependent minority carrier lifetimes of InAs/InAs1-xSbx type-II superlattices are presented. The longest lifetime at 11 K is 504 ± 40 ns and at 77 K is 412 ± 25 ns. Samples with long periods and small wave function overlaps have both no