C
C. Williams
Researcher at University of Rochester
Publications - 19
Citations - 1863
C. Williams is an academic researcher from University of Rochester. The author has contributed to research in topics: Photodetector & Picosecond. The author has an hindex of 8, co-authored 18 publications receiving 1735 citations.
Papers
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Journal ArticleDOI
Picosecond superconducting single-photon optical detector
Gregory Goltsman,O. Okunev,G. M. Chulkova,A. Lipatov,A. D. Semenov,Konstantin Smirnov,B. M. Voronov,A. Dzardanov,C. Williams,Roman Sobolewski +9 more
TL;DR: In this article, a supercurrent-assisted hotspot-formation mechanism for ultrafast detection and counting of visible and infrared photons is presented, where a photon-induced hotspot leads to a temporary formation of a resistive barrier across the superconducting sensor strip and results in an easily measurable voltage pulse.
Journal ArticleDOI
Intrinsic picosecond response times of Y–Ba–Cu–O superconducting photodetectors
M. Lindgren,Marc Currie,C. Williams,T. Y. Hsiang,Philippe M. Fauchet,Roman Sobolewski,S.H. Moffat,Robert A. Hughes,John S. Preston,Frank A. Hegmann +9 more
TL;DR: In this paper, the femtosecond time-resolved measurements on the photoresponse of an epitaxial YBa2Cu3O7−x (YBCO) thin-film photodetector, patterned into a microbridge geometry, were reported.
Journal ArticleDOI
Fabrication and properties of an ultrafast NbN hot-electron single-photon detector
G.N. Gol'tsman,O. Okunev,G. M. Chulkova,A. Lipatov,A. Dzardanov,Konstantin Smirnov,A. D. Semenov,Boris M. Voronov,C. Williams,Roman Sobolewski +9 more
TL;DR: In this paper, an ultra-high-speed single-photon counter for visible and near-infrared wavebands based on an ultrathin NbN hot-electron photodetector (HEP) was developed.
Journal ArticleDOI
Ultrafast photoresponse in microbridges and pulse propagation in transmission lines made from high-T/sub c/ superconducting Y-Ba-Cu-O thin films
M. Lindgren,Marc Currie,C. Williams,T.Y. Hsiang,P. M. Fauchet,Roman Sobolewski,S.H. Moffat,Robert A. Hughes,John S. Preston,Frank A. Hegmann +9 more
TL;DR: In this paper, femtosecond time-resolved measurements of the photoresponse of microbridges in YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) thin films were performed using an electrooptic sampling technique.
Journal ArticleDOI
Ultrafast YBCO photodetector based on the kinetic-inductive process
C. Williams,Ying Xu,Roman Adam,M. Darula,Oliver Harnack,J. Scherbel,Michael Siegel,Frank A. Hegmann,Roman Sobolewski +8 more
TL;DR: In this paper, the authors make use of the nonequilibrium kinetic-inductive effect in epitaxial YBa/sub 2/Cu/sub 3/O/sub 7-x/ (YBCO) thin films to demonstrate an ultrafast, high-sensitivity, broadband photodetector.