Abstract

The effect of imperfect collimation on the fringe separation of a Fizeau wavemeter is calculated. It is shown that illumination in a plane normal to the wedge face and parallel to the wedge axis enables the detector array to be positioned such that the wavelength error caused by spherical wave-front curvature introduced by the beam expander becomes insignificant to 1 part in 10⁸, and no dispersion correction for the wedge plate is required. It is also shown that a sealed air wedge is capable of a wavelength precision approaching 1 part in 10⁸.

© 1983 Optical Society of America

Compact Fizeau wavemeter

James L. Gardner
Appl. Opt. 24(21) 3570-3573 (1985)

Simple compact Fizeau wavemeter

D. F. Gray, K. A. Smith, and F. B. Dunning
Appl. Opt. 25(8) 1339-1343 (1986)

Wavefront curvature compensation in a Fizeau wavemeter

James L. Gardner
Appl. Opt. 25(21) 3799-3800 (1986)

Fizeau wavemeter for pulsed laser wavelength measurement

Mark B Morris, Thomas J. McIlrath, and James J. Snyder
Appl. Opt. 23(21) 3862-3868 (1984)

Laser-linewidth measurement with a Fizeau wavemeter

Christopher Reiser, Peter Esherick, and Robert B. Lopert
Opt. Lett. 13(11) 981-983 (1988)