Striped Fabry-Perots: improved efficiency for velocimetry

Abstract

Removing a narrow stripe of the reflective coating from the input mirror of a Fabry-Perot interferometer can dramatically increase the amount of light transmitted through the system; we have observed gains in excess of 50 when we compare a conventional Fabry-Perot with the striped Fabry-Perot under similar lighting conditions. The stripe affects the distribution of light in the Fabry-Perot peaks causing them to be lower in the center of the pattern. We examine this distribution, and discuss its application in analyzing velocities.

Comment on “Generalized grating equation for virtually imaged phased-array spectral dispersers”

“…1. The transmission efficiency of the device approaches 100% when the reflectivity of the entrance face, other than the transparent window, is equal to one and for optimum alignment, which greatly exceeds the efficiency of standard (nonwindowed) Fabry-Perot etalons [1][2][3][4].…”

Method for removing a stripe from the coating of a Fabry-Perot mirror

“…McMillan and Steinmetz (1) have analyzed the affect of the striped mirror on the efficiency of the system; this report discusses the current method of producing stripes of specified size and quality as well as previous attempts.…”