Obliquity Effects in Interferometry

Abstract

Bruce (1955) and Thornton (1955) recently gave an analysis of the effects of oblique rays in length interferometers. It was shown that, for a given set of fringes produced in light of wavelength A and with a nominal path difference of 2t between the interfering rays, the fringe displacement due to obliquity depends on the value of a phase factor ? = (pt/?)?2, where ? is an obliquity angle.