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Displaying records 601 to 610 of 754 records.
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601. Spectral responsivity based calibration of photometer and colorimeter standards
Topic: Physics
Published: 6/19/2013
Author: George P Eppeldauer
Abstract: Several new generation transfer- and working-standard illuminance meters and tristimulus colorimeters have been developed at the National Institute of Standards and Technology (NIST) to measure all kinds of light sources with low uncertainty. The spe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913528

602. Spectrally Bright and Broad Fiber-Based Heralded Single-Photon Source
Topic: Physics
Published: 7/29/2008
Authors: Elizabeth Anne Goldschmidt, M D. Eisaman, Jingyun Fan, Sergey V Polyakov, Alan L Migdall
Abstract: We present the first experimental characterization of a heralded single-photon source based on spontaneous four-wave-mixing in a single-mode microstructure fiber. We measure the second-order correlation function, g(2)(0), to be far below the classi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=842447

603. Spectroscopy and Thermometry of Drumhead Modes in a Mesoscopic Trapped-Ion Crystal Using Entanglement
Topic: Physics
Published: 5/25/2012
Authors: Brian C Sawyer, Joseph Wright Britton, Adam Keith, C.-C Joseph Wang, James K. Freericks, Hermann Uys, Michael Biercuk, John J Bollinger
Abstract: We demonstrate a method of sensitive detection and thermometry of individual modes in cold (^dsim^1 mK), planar one-component ion plasmas. Exploiting precise control over the valence electron spins of several hundred crystallized ^u9^Be^u+^ confined ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910453

604. Spherical Reference Cavities for Ultra-Stable Lasers in Non-Laboratory Environments
Topic: Physics
Published: 2/14/2011
Authors: David R Leibrandt, Michael J. (Michael) Thorpe, Mark Notcutt, Robert E. Drullinger, Till P Rosenband, James C Bergquist
Abstract: We present an ultra-stable optical cavity design that is insensitive to both vibrations and orientation. The design is based on a spherical cavity spacer which is held rigidly at two points on a diameter of the sphere. Coupling of the support force ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907288

605. Spin Squeezing Applied to Frequency Standards
Topic: Physics
Published: 10/16/1995
Authors: John J Bollinger, David J Wineland, Wayne M Itano, D J Heinzen
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=105156

606. Spin dephasing as a probe of Mmde temperature, motional state distributions, and heating rates in a two-dimensional ion crystal
Topic: Physics
Published: 3/10/2014
Authors: Brian C Sawyer, Joseph Wright Britton, John J Bollinger
Abstract: We employ spin-dependent optical dipole forces to characterize the transverse center-of-mass (COM) motional mode of a two-dimensional trapped ion crystal of hundreds of ^u9^Be^u+^. By comparing the measured spin dephasing produced by the spin-depende ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=915134

607. Spin transport parameters in metallic multilayers determined by ferromagnetic resonance measurements of spin-pumping
Topic: Physics
Published: 4/19/2013
Authors: Carl Thomas Boone, Hans T. Nembach, Justin M Shaw, Thomas J Silva
Abstract: We measured spin-transport in nonferromagnetic (NM) metallic multilayers from the contribution to damping due to spin pumping from a ferromagnetic Co^d90^Fe^d10^ thin film. The multilayer stack consisted of NM^d1^/NM^d2^/Co^d90^Fe^d10^(2 nm)/NM^d2^/N ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912988

608. Spin-transfer dynamics in spin valves with out-of-plane magnetized CoNi free layers
Topic: Physics
Published: 1/29/2010
Authors: William H Rippard, Alina M Deac, Matthew R Pufall, Justin M Shaw, Mark W Keller, Stephen E Russek, Gerrit E Bauer, Claudio Serpico
Abstract: We have measured spin-transfer-induced dynamics in magnetic nanocontact devices having a perpendicularly magnetized Co/Ni free layer and an in-plane magnetized CoFe fixed layer. The frequencies and powers of the excitations agree well with the predic ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903981

609. Spiral Resonators for On-Chip Laser Frequency Stabilization
Topic: Physics
Published: 9/17/2013
Authors: Scott A Diddams, Hansuek Lee, Myoung=Gyun Suh, Tong Chen, Jiang Li, Kerry J. Vahala
Abstract: Frequency references are indispensable to radio, microwave, and time keeping systems, with far reaching applications in navigation, communi- cation, remote sensing, and basic science. Over the past decade there has been an optical revo- lution in tim ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913960

610. Stabilization of femtosecond laser frequency combs with subhertz residual linewidths
Topic: Physics
Published: 5/15/2004
Authors: A Bartels, Christopher W Oates, Leo W. Hollberg, Scott A Diddams
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104845



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