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NIST Authors in Bold

Displaying 53626 - 53650 of 73697

Noise-Temperature Measurement System for the WR-28 Band

August 1, 1997
Author(s)
James P. Randa, L. A. Terrell
The NIST Noise Project has constructed and tested a radiometer for the measurement of noise sources in the WR-28 waveguide band (26.5 GHz to 40 GHz). It is a total-power radiometer which incorporates a six-port reflectometer for the measurement of relevant

Systems Integration for Manufacturing Applications Technical Program Plan

August 1, 1997
Author(s)
James E. Fowler
The Systems Integration for Manufacturing Applications (SIMA) Program is NIST''s coordinating focus for manufacturing efforts sponsored under the U.S. government''s High Performance Computing and Communications intitiative. Initiated in 1994, the SIMA

Stability of short, single-mode erbium-doped fiber lasers

July 20, 1997
Author(s)
Mikael Svalgaard, Sarah L. Gilbert
We conducted a detailed study of the stability of short, erbium-doped fiber lasers fabricated with two UV-induced Bragg gratings written into the doped fiber. We find that the relative intensity noise of single-longitudinal-mode fiber grating lasers is

Force Measurement Services at NIST: Equipment, Procedures, and Uncertainty

July 17, 1997
Author(s)
Thomas W. Bartel, Ricky L. Seifarth, Simone L. Yaniv
The facilities, instrumentation, and procedures currently used at the National Institute of Standards and Technology (NIST) for force measurement services are described. The uncertainty in the forces realized by the NIST primary force standard deadweight

Advanced Methods and Models for Describing Coating Appearance

July 7, 1997
Author(s)
M E. McKnight, Jonathan W. Martin
The National Institute of Standards and Technology has recently initiated a study to advance appearance metrology. A systems approach which applies technological advances in oprical metrology, mathematical modeling, and computer rendering to the

Imaging of domain-inverted gratings in LiNbO 3 by electrostatic force microscopy

July 7, 1997
Author(s)
H. Bluhm, A. Wadas, R. Wiesendanger, Alexana Roshko, J. A. Aust, Dong-Ha Nam
Ferroelectric domains in LiNbO 3 have been investigated by means of electrostatic force microscopy. Polarization-inverted gratings with 4 υm periodicity were fabricated by titanium diffusion into both + c and - c faces of single-domain LiNbO 3 crystals

Experimental Study of Caesium 6PJ+ 6PJ --> 7PJ? + 6S energy pooling collisions and modeling of the excited atom density in the presence of optical pumping and radiation trapping

July 5, 1997
Author(s)
F D. Tomasi, J Huennekens, Zeina J. Kubarych, A Allegrini, A Fioretti, P Verker, S Milosevic
An experimental study of caesium energy pooling collisions at thermal energies, has been carried out in a capillary cell using diode laser excitation. Use of the capillary cell minimizes the effects of radiation trapping, but nonetheless, such effects

A Method to Characterize Overlay Tool Misalignments and Distortions

July 1, 1997
Author(s)
Richard M. Silver, James E. Potzick, Fredric Scire, Christopher J. Evans, Michael L. McGlauflin, Edward A. Kornegay, Robert D. Larrabee
A new optical alignment artifact under development at NIST is described. This structure, referred to as a stepped microcone, is designed to assist users and manufacturers of overlay metrology tools in the reduction of tool-induced measurement errors. We
Displaying 53626 - 53650 of 73697
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