Zobrazeno 1 - 10
of 13
pro vyhledávání: '"William E. Keicher"'
Autor:
A. Verevkin, Roman Sobolewski, Eric A. Dauler, Aaron Pearlman, B. M. Voronov, A. Ferri, Joel K. W. Yang, Karl K. Berggren, William E. Keicher, G.N. Gol'tsman
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 15:626-630
We have developed a fabrication process for GHz-counting-rate, single-photon, high-detection-efficiency, NbN, nanowire detectors. We have demonstrated two processes for the device patterning, one based on the standard polymethylmethacrylate (PMMA) or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::892bb65ad1796f627b99564d60aded0a
https://doi.org/10.1109/tasc.2005.849971
https://doi.org/10.1109/tasc.2005.849971
Autor:
Mark L. Stevens, William E. Keicher, David O. Caplan, Ronald R. Parenti, David J. Geisler, A. M. Fletcher, Timothy M. Yarnall, Scott A. Hamilton
Publikováno v:
OFC/NFOEC
Combining optical-phase-locked loop based coherent detection, interleaving, and powerful rate-½ FEC enabled the error-free transmission of BPSK waveforms at information rates of 9.94-Gb/s and 19.88-Gb/s with sensitivities of 2.1 photons-per-bit and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de59ae0763b3fc70474bacd8968738eb
https://doi.org/10.1364/ofc.2013.om2c.6
https://doi.org/10.1364/ofc.2013.om2c.6
Autor:
D.L. Spears, Tso Yee Fan, William E. Keicher, B.E. Edwards, I. Melngailis, Antonio Sanchez, S. Marcus, Charles Freed
Publikováno v:
Proceedings of the IEEE. 84:227-267
The development of the laser soon led to recognition of its potential in radar applications. As radar systems were designed and implemented, however, it became clear that major refinement of the laser sources was needed to meet specific radar transmi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b569ecb4034eaad0d20b7b80873a1264
https://doi.org/10.1109/5.482230
https://doi.org/10.1109/5.482230
Autor:
Joel G. Grimm, Adam Prince, Steven A. Davidson, Kenneth I. Schultz, William E. Keicher, Michael Hess, Philip M. Blumenau, Mary Martin, Alan L. Kachelmyer, Leo J. Sullivan
Publikováno v:
Naval Engineers Journal. 106:192-207
An airborne passive/active surveillance aircraft-based, electro-optic sensor system, named Gatekeeper, is being developed for the US Navy Theater Ballistic Missile Defense Program. The sensor is designed to detect theater ballistic missiles (TBMs), e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::895d797ccfb746d09371a8314b084a27
https://doi.org/10.1111/j.1559-3584.1994.tb02852.x
https://doi.org/10.1111/j.1559-3584.1994.tb02852.x
Autor:
William E. Keicher, Andrew J. Kerman, Bryan S. Robinson, Matthew E. Grein, Scott A. Hamilton, L.E. Elgin
Publikováno v:
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference.
In this paper, we demonstrate a 1550-nm photon-counting optical communications channel using pulse-position modulation and an optical receiver utilizing a periodically-poled lithium niobate wavelength converter and a silicon Geiger-mode avalanche pho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f757d19a2bd6a39081dc964c82f6c07c
https://doi.org/10.1109/cleo.2006.4627612
https://doi.org/10.1109/cleo.2006.4627612
Autor:
Karl K. Berggren, Eric A. Dauler, Boris M. Voronov, Gregory Goltsman, William E. Keicher, Joel K. W. Yang, Andrew J. Kerman
We investigate the recovery of superconducting NbN-nanowire photon counters after detection of an optical pulse at a wavelength of 1550 nm, and present a model that quantitatively accounts for our observations. The reset time is found to be limited b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99f1429bcc11e9e84548ac2be2eabea6
http://arxiv.org/abs/physics/0510238
http://arxiv.org/abs/physics/0510238
Autor:
Vineet Mehta, F.I. Khatri, Jeffrey M. Roth, Ronald R. Parenti, William E. Keicher, W. Freking
Publikováno v:
The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003. LEOS 2003..
We summarize important physical layer design issues relevant to atmospheric optical link networks. Specific topics include link power budget analyses, optical module design, atmospheric transmission and turbulence, and the use of polarization.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::744b12937d152bcf797baec4e4a00deb
https://doi.org/10.1109/leos.2003.1251577
https://doi.org/10.1109/leos.2003.1251577
Autor:
Sean J. McKenna, Philip M. Blumenau, M. John Yoder, Daniel H. Leslie, Douglas G. Youmans, Philip E. Cassady, William E. Keicher, Ronald N. Murata
Publikováno v:
SPIE Proceedings.
Range information from a laser radar can be used to rapidly converge target track files for theater missile defense from an airborne sensor platform. This paper examines the application of laser radar technology to this mission. Eyesafe lasers includ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ecd9f33c742784991a8f88505b2cfe3
https://doi.org/10.1117/12.212029
https://doi.org/10.1117/12.212029
Autor:
William E. Keicher, E. B. Craig, M. F. Reiley, J. R. Senning, L. W. Swezey, Sanjeev R. Kulkarni, J. K. Parker, Richard M. Marino, R. N. Capes
Publikováno v:
Laser Radar III.
Image reconstruction from projections has been extensively developed in the medical field. For example, Computer Assisted Tomography (CAT) scanners measures the absorption of X-rays along ray-projections through a slice of a body. Applying reconstruc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbbab6d2c1a553456acefe4d45008bca
https://doi.org/10.1117/12.960240
https://doi.org/10.1117/12.960240
Publikováno v:
SPIE Proceedings.
Effect of Atmospheric Distortion of Carbon Dioxide Laser Radar WaveformsAlan L. KachelmyerRobert E. KnowldenWilliam E. KeicherLincoln LaboratoryP.O. Box 73Lexington, Massachusetts 02173IntroductionCarbon dioxide (CO2) lasers can be used in coherent o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcec69c1e890e666b1312507aaf131f8
https://doi.org/10.1117/12.940584
https://doi.org/10.1117/12.940584