Wave-front curvature in a Fizeau wavemeter
- 1 February 1983
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 8 (2) , 91-93
- https://doi.org/10.1364/ol.8.000091
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.Keywords
This publication has 5 references indexed in Scilit:
- Fringe shifts in multiple-beam Fizeau interferometryJournal of the Optical Society of America, 1982
- The Refractivity of AirJournal of Research of the National Bureau of Standards, 1981
- Compact static wavelength meter for both pulsed and cw lasersSoviet Journal of Quantum Electronics, 1978
- The Refractive Index of AirMetrologia, 1966
- Numerical Evaluation of the Intensity Curve of a Multiple-Beam Fizeau FringeJournal of the Physics Society Japan, 1953