Abstract

This paper reviews progress in the techniques of calibration of scales and line standards by interferometry, techniques that have been under very active development since the redefinition of the meter in terms of an optical wavelength. After a study of some general considerations, specific examples of interference comparators are described, and, finally, the effect of the development of these techniques on the usefulness of scales as secondary standards is discussed.

© 1963 Optical Society of America

The International Length Standard

K. M. Baird and L. E. Howlett
Appl. Opt. 2(5) 455-463 (1963)

An Automatic Calibrating Apparatus for Standard Scales by Counting Interference Fringes

Yasuhiro Doi, Kajuro Shimizu, Teiichi Tsuboi, and Tsuguo Kouno
Appl. Opt. 3(7) 817-823 (1964)

Interferometric Measurement of Wavelengths of Infrared Atomic Emission Lines in the Extraphotographic Region

Curtis J. Humphreys
Appl. Opt. 2(11) 1155-1163 (1963)

The Rapid Measurement of Photographic Records of Interference Fringes

J. Dyson
Appl. Opt. 2(5) 487-489 (1963)

A New Standard of Spectral Irradiance

Ralph Stair, William E. Schneider, and John K. Jackson
Appl. Opt. 2(11) 1151-1154 (1963)