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Topic Area: Physics

Displaying records 531 to 540 of 754 records.
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531. A Polarizable Model for Ethylene Oxide
Topic: Physics
Published: 6/18/2005
Author: Raymond Dale Mountain
Abstract: A series of interaction models for ethylene oxide are developed for use in molecular simulation of the thermal properties of both the gas and liquid phases. While it is possible to develop nonpolarizable models to accurately generate either the gas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=832056

532. Wavelength References for Optical Interferometry
Topic: Physics
Published: 6/12/2005
Authors: Richard W Fox, Leo W. Hollberg
Abstract: We are exploring air wavelength references useful for interferometry. Femtosecond comb frequency measurements determine mode wavelengths of a stable optical cavity in vacuum, and subsequently a tunable laser is locked to the modes in air.
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30063

533. A Local Oscillator for Chip-Scale Atomic Clocks at NIST
Topic: Physics
Published: 6/1/2005
Authors: Alan Brannon, J Breitbarth, Z Popovic, Vladislav Gerginov, V Shah, Svenja A Knappe, Leo W. Hollberg, John E Kitching
Abstract: We report the first local oscillator (LO) demonstrating viability in terms of performance, size, and power, for chip scale atomic clocks (CSAC) at the National Institute of Standards and Technology in Boulder, CO. This volgate-controlled oscillator ( ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841991

534. Low noise synthesis of microwave signals from an optical source
Topic: Physics
Published: 5/26/2005
Authors: John J. McFerran, Eugene N Ivanov, A Bartels, G Wilpers, Christopher W Oates, Scott A Diddams, Leo W. Hollberg
Abstract: We demonstrate the low noise synthesis of a harmonic comb of microwave frequencies using a femtosecond laser based synthesiser that is referenced to a cabity-stabilised laser. The residual phase noise is ~ -110dBc/Hz at 1 Hz from the 10 GHz harmonic. ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30054

535. Implementation of the semiclassical quantum Fourier transform in a scalable system
Topic: Physics
Published: 5/13/2005
Authors: J Chiaverini, Joseph Wright Britton, Dietrich G Leibfried, Emanuel H Knill, Murray D Barrett, Brad Rodney Blakestad, Wayne M Itano, John D. Jost, C. Langer, R Ozeri, Tobias Schaetz, David J Wineland
Abstract: One of the most interesting future applications of quantum computers is Shor's factoring algorithm, which provides an exponential speedup compared to known classical algorithms. The crucial final step in Shor's algorithm is the quantum Fourier transf ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50002

536. Optical frequency / wavelentgh references
Topic: Physics
Published: 4/25/2005
Authors: Leo W. Hollberg, Christopher W Oates, G Wilpers, C Hoyt, Zeb Barber, Scott A Diddams, W Oskay, James C Bergquist
Abstract: Ideas for using visible light from atomic transitions for precision instrumentation and metrology go back at least to the 1800's. There are several good reasons to use optical frequencies, and with the scientific and technological advances of the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841880

537. International Comparisons of Femtosecond Laser Frequency Combs
Topic: Physics
Published: 4/1/2005
Authors: Long-Sheng Ma, Zhiyi Bi, A Bartels, Lennart Robertsson, Massimo Zucco, Robert Windeler, G Wilpers, Christopher W Oates, Leo W. Hollberg, Scott A Diddams
Abstract: Two types of international comparisons of femtosecond laser frequency combs have been performed in France and the USA. Five combs were involved in the comparisons. Three combs, of which two are transportable, employ nonlinear photonic crystal fiber ( ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50123

538. Femtosecond laser-based synthesis of ultrastable microwave signals from optical frequency references
Topic: Physics
Published: 3/15/2005
Authors: A Bartels, Scott A Diddams, Christopher W Oates, G Wilpers, James C Bergquist, Windell Oskay, Leo W. Hollberg
Abstract: Using femtosecond laser frequency combs to convert optical frequency references to the microwave domain, we demonstrate the synthesis of 10 GHz signals having an instability of <3.5e-15 at 1 s averaging time, limited by the optical reference. The res ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=50160

539. Absolute Radiometers, in Experimental Methods in the Physical Sciences, ed. by A.C. Parr, R.U. Datla and J.L. Gardner
Topic: Physics
Published: 1/1/2005
Authors: N P Fox, Joseph Paul Rice
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104466

540. Aging of Spectral Lamps in Space
Topic: Physics
Published: 1/1/2005
Authors: F Kerber, D Lindler, P Bristow, D Lembke, Gillian Nave, Joseph Reader, Craig J Sansonetti, S Heap, Michael R Rosa, H J Wood
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=102758



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