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Dimensional Measurements

Laser Measurements

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Technical Contact:
Jack Stone
Tel: 301-975-5638
E-mail: jack.stone@nist.gov

Please contact the technical staff before shipping instruments or standards to the address listed below.

Mailing Address:
National Institute of Standards and Technology
100 Bureau Drive, Stop 8211
Gaithersburg, MD 20899-8211

Service ID Number Description of Services Fee ($)
14510S Laser Frequency/Wavelength, Full Calibration 2993
14511S Quick Check of Frequency/Wavelength at Laboratory Conditions 1555

Fees are subject to change without notice.

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Laser Frequency/Wavelength (14510S-14511S)

The frequency (or, equivalently, the vacuum wavelength) of a red He-Ne laser is determined by comparison to an iodine-stabilized He-Ne laser. The attainable accuracy of this technique is ultimately limited by the uncertainty in the wavelength of the iodine stabilized laser. The relative standard uncertainty of the laser vacuum wavelength at NIST is 5 x 10-11 . The relative expanded uncertainty is 1 x 10-10 . The relative expanded uncertainty can be reduced to 5 x 10-11 on special requests. As a practical matter, however, the uncertainty of a comparison is usually determined by the limited reproducibility of the laser under test.

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Laser Trackers, B89.4.19 Ranging Test (14520S)

Program questions:
Phone: 301-975-5454, Fax: 301-975-2950
NIST, 100 Bureau Drive, Stop 8363, Gaithersburg, MD 20899-8363