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Displaying 676 - 700 of 813

SRM Spotlight

February 18, 2009
Author(s)
Regina R. Montgomery
The SRM Spotlight is a newsletter published by the Measurement Services Division for users of NIST standard reference materials. The Spotlight announces new reference materials and provides information about their use. In addition, this newsletter contains

Coherent measurements with fiber-laser frequency combs

February 2, 2009
Author(s)
Nathan R. Newbury, Ian R. Coddington, Tasshi Dennis, William C. Swann, Paul A. Williams
The coherent and broad spectral output of fiber-laser frequency combs can be exploited for a variety of high-resolution measurements outside of conventional frequency metrology. We will discuss recent measurements in spectroscopy, ranging, and

Low noise frequency comb based on an all-fiber polarization-maintaining figure-8 laser

February 2, 2009
Author(s)
Esther Baumann, Fabrizio R. Giorgetta, Jeffrey W. Nicholson, William C. Swann, Ian R. Coddington, Nathan R. Newbury
We present a frequency comb based on an all-fiber polarization-maintaining figure-8 laser. It is locked to an optical reference through an intracavity high bandwidth electro-optical modulator and has a flat phase noise of -78 dBc/Hz.

NIST-NRC Comparison of Total Immersion Liquid-in-Glass Thermometers

January 31, 2009
Author(s)
Ken D. Hill, D. J. Gee, Christina D. Cross, Gregory F. Strouse
The use of liquid-in-glass thermometers is described in many documentary standards in the fields of environmental testing, material testing, and material transfer. Many national metrology institutes, including the National Institute of Standards and

SRM NIST Standard Reference Materials Catalog, January 2009

January 2, 2009
Author(s)
Joan C. Sauerwein, Regina R. Montgomery
NIST Standard Reference Materials (SRMs) are used by industry, government, and academia to ensure the highest quality measurements. This catalog lists over 1100 individual reference materials produced and sold by NIST, each with carefully assigned values

Laboratory Recognition Process for Project 25 Compliance Assessment

January 1, 2009
Author(s)
Kurt Fischer, Andrew P. Thiessen
Project 25 (P25) is a standards development process for the design, manufacture and evaluation of interoperable digital two-way wireless communications products created by and for public safety professionals. The published P25 standards suite is

SRM Spotlight

December 17, 2008
Author(s)
Regina R. Montgomery
The SRM Spotlight is a newsletter published by the Measurement Services Division for users of NIST standard reference materials. The Spotlight announces new reference materials and provides information about their use. In addition, this newsletter contains

User's Guide for the Quality of Design Testing Tool and the Content Checker

November 5, 2008
Author(s)
Katherine C. Morris, Simon P. Frechette, Puja Goyal, Joshua Lubell, Boonserm Kulvatunyou, Salifou Sidi Malick, Nicolas Brayard, Severin Tixier
This document describes the operation and usage of the Quality of Design and the Content Checker Testing Tools. These tools were developed at the National Institute of Standards and Technology (NIST) to support people in developing standards for the

UV pulse response nonlinearity of two Si photodiodes

October 30, 2008
Author(s)
Shao Yang, Darryl A. Keenan, Marla L. Dowell
We measured the pulse response nonlinearity of two silicon photodiodes at 193 and 248 nm with different measurement conditions. We found large and different nonlinearities. We discuss the cause of the nonlinear features.

International comparisons of optical fiber power measurements

October 1, 2008
Author(s)
Igor Vayshenker, David J. Livigni, Xiaoyu X. Li, John H. Lehman
We discuss the results of optical fiber power meter (OFPM) measurements at 1302 and 1546 nm made by NIST and six national measurement institutes (NMIs). We also describe transfer standards and the associated uncertainties. The comparisons show a reasonably

Environmental Trends Affecting Electronics Manufacturing

August 1, 2008
Author(s)
Eric D. Simmon, John V. Messina, Matthew L. Aronoff, Michael Cox
Companies that in the recent past were primarily concerned with satisfying environmental regulations are finding that environmental responsibility and environmental resource usage are of equal concern. Looking forward, manufacturers will be faced with the

Natural Gas Flow Calibration Service

August 1, 2008
Author(s)
Aaron N. Johnson
This document describes NIST's high pressure natural gas flow calibration service (NGFCS). Flow calibrations are conducted offsite at the Colorado Experimental Engineering Station Incorporated (CEESI) in Garner, Iowa. A parallel array of nine turbine meter

Reflective attenuator for high energy laser measurements

June 20, 2008
Author(s)
John H. Lehman, David J. Livigni, Xiaoyu X. Li, Christopher L. Cromer, Marla L. Dowell
A high-energy laser attenuator in the range of 250 mJ (20 nsec pulse width, 10 Hz repetition rate, 1064 nm wavelength) is described. The optical elements which constitute the attenuator are mirrors with relatively low reflectance, oriented at 45° angle of

Optical fiber metrology

May 1, 2008
Author(s)
Gordon W. Day, Douglas L. Franzen, Kent B. Rochford
The development of metrology to support the optical fiber communications industry is an excellent case study of how stakeholders ? fiber manufacturers, their customers, standards-developing organizations, and (in the U.S.) the Federal Government ? worked

Defining Units in the Quantum SI

February 18, 2008
Author(s)
Peter J. Mohr
Possible changes to the International System of Units (SI) are being discussed, including a proposal to define the units by specifying the values of a set of fundamental constants. This note is meant to be an elementary guide to the algebra associated with

NIST HB-1A Energy Efficient Lighting - Solid State Luminaires

December 7, 2007
Author(s)
C Cameron Miller, Lawrence I. Knab, Ambler Thompson, Jon M. Crickenberger
NIST Handbook 150-1A presents technical requirements and guidance for the accreditation of laboratories under the National Voluntary Laboratory Accreditation Program (NVLAP) Energy Efficient Lighting/Solid State luminaires program. It is intended for
Displaying 676 - 700 of 813
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