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Displaying 36826 - 36850 of 74045

Critical Dimension Reference Features with Sub-Five Nanometer Uncertainty

May 30, 2005
Author(s)
Michael W. Cresswell, Ronald G. Dixson, William F. Guthrie, Richard A. Allen, Christine E. Murabito, Brandon Park, Joaquin (. Martinez, Amy Hunt
The implementation of a new type of HRTEM-imaging (High-Resolution Transmission Electron Microscopy) test structure, and the use of CD-AFM (CD-Atomic Force Microscopy) to serve as the transfer metrology have resulted in reductions in the uncertainties

Measurement of Thermal Properties of Gypsum Board at Elevated Temperatures

May 30, 2005
Author(s)
Samuel L. Manzello, Seul-Hyun Park, Dale P. Bentz, Tensei Mizukami
The thermal conductivity, specific heat, mass loss, and linear contraction for gypsum board types widely used in the USA and Japan were measured both at room temperature and elevated temperatures. The gypsum board types tested include Type X and Type C

Securing Voice Over IP Networks

May 27, 2005
Author(s)
T J. Walsh, D. Richard Kuhn
Voice over IP - the transmission of voice over traditional packet-switched IP networks - is one of the hottest trends in telecommunications. As with any new technology, VOIP introduces both opportunities and problems. Lower cost and greater flexibility are

Stabilized frequency comb with a self-referenced femtosecond Cr:forsterite laser

May 27, 2005
Author(s)
Kyoungsik Kim, Brian R. Washburn, G Wilpers, C. W. Oates, Leo W. Hollberg, Nathan R. Newbury, Scott Diddams, Jeffrey W. Nicholson, M. Yan
The frequency comb of a Cr:forsterite femtosecond laser is stabilized using the f-to-2f self-referencing technique. The frequency noise of the comb components at 1064, 1314, and 1550nm differs significantly from the noise of f0.

A Guide to the Internet Atomic Databases for Hot Plasmas

May 26, 2005
Author(s)
Y Ralchenko
The Internet atomic databases are nowadays considered to be the primary tool fordissemination of atomic data. We present here a review of numerical andbibliographic databases of importance for diagnostics of hot plasmas. Specialattention is given to the

Low noise synthesis of microwave signals from an optical source

May 26, 2005
Author(s)
John J. McFerran, Eugene N. Ivanov, A Bartels, G Wilpers, Christopher W. Oates, Scott A. Diddams, Leo W. Hollberg
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. An

Site Specific X-Ray Photoelectron Spectroscopy Using X-Ray Standing Waves

May 26, 2005
Author(s)
Joseph C. Woicik
The x-ray standing wave technique is an experimental method that can accurately determine the precise crystallographic positions of atoms within a crystalline unit cell. As we have seen in preceding chapters of this book, this unique ability arises from

Anionic Effects in Hot Surface Combustions.

May 24, 2005
Author(s)
W W. Bannister, A Donatelli, F Bonner, F Lai, P Kurup, J Egan, E G. Jahngen, P Muanchareon, W Paramasawat, W Sriseubsai, S K. Chiang, V Kongkadee, S Sengupta, R Nagarajan, N Euaphantasate, V Parma, M Cazeca, E Chen, A Morales

Parameter Affecting the Performance of a Residential-Scale Stationary Fuel Cell System

May 23, 2005
Author(s)
Mark W. Davis, Arthur H. Fanney, Michael J. LaBarre, K R. Henderson, Brian P. Dougherty
Researchers at the National Institute of Standards and Technology (NIST) have measured the performance of a residential fuel cell system when subjected to various environmental and load conditions. The system, which uses natural gas as its source fuel, is

A variable repetition rate frequency comb for infrared frequency metrology

May 22, 2005
Author(s)
Brian Washburn, R W. Fox, William C. Swann, Nathan R. Newbury, Jeffrey W. Nicholson, K Feder, Paul S. Westbrook
A frequency comb generated by a variable repetition rate mode-locked fiber laser is presented. The spacing of the frequency comb can be scanned while one comb tooth is phase-locked to a stable RF source.

Efficiently Generation of Correlated Photon Pairs in Microstructure Fibers

May 22, 2005
Author(s)
Jingyun Fan, Alan L. Migdall, L Wang
We report the efficient generation of correlated photon pairs by four-wave mixing in a 1.8 meter long microstructure fiber. The detected coincidence rate is 10,000/s with 0.8 nm collection bandwidth, the highest to date in a fiber-based photon source. The

Frequency Comb Dynamics of a Solitonic Fiber Laser: Theory

May 22, 2005
Author(s)
Nathan R. Newbury, Brian Washburn
The effects of Raman, self-steepening and higher-order dispersion on a fiber-laser frequency comb are analyzed using perturbation theory. Transfer functions are derived for the comb response to change in cavity length or pump power.

Optical Atomic Clocks: A Revolution in Perfomance

May 22, 2005
Author(s)
Leo W. Hollberg
Optical atomic clocks using cold atoms, stable lasers and femtosecond laser frequency combs provide high accurace and stability from RF to the ultraviolet. They have unprecedented performance: ultrahigh stability, sub-fs timing jitter, lowe-noise

The Performance of Chip-Scale Atomic Clocks

May 22, 2005
Author(s)
Svenja A. Knappe, P Schwindt, Leo W. Hollberg, John E. Kitching, V Shah, Vladislav Gerginov
We compare the performance of two chip-scale atomic clock physics packages, one based on excitation using the D 2 line if Cs and the other using the D 1 line of 87Rb.

Ultra-high Stability Optical Frequency Standard Based on Laser-Cooled Neutral Calcium

May 22, 2005
Author(s)
G Wilpers, Christopher W. Oates, Scott A. Diddams, A Bartels, Windell Oskay, James C. Bergquist, Leo W. Hollberg
A beatnote between the Ca and Hg+ optical frequency standards via a mode-locked fs-laser frequency comb demonstrates the highest frequency stability measured to date. The high stability accelerates evaluation of the Ca standard's systematic shifts.
Displaying 36826 - 36850 of 74045
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