Yu. V. Troitskii

Noninverted interference fringes upon light reflection from a Fabry-Perot interferometer with an asymmetric diffraction mirror

This paper describes the calculation, fabrication, and experimental investigation of a reflection two-mirror interferometer whose front mirror is asymmetric in reflection and made as a thin-layer diffraction metal structure (Al, Ag) in combination with a dielectric coating (MgF2, ZnS). In reflection, this interferometer creates in the zero diffraction order a transmission-like pattern similar to that produced by an ordinary Fabry-Perot interferometer operating in transmitted light.

A reflection interferometer with transmission-like characteristics as an element of interferometric gravitational wave detectors

It is proposed to replace the Fabry-Perot interferometers incorporated into the combined Fabry-Perot-Michelson interferometer (FPMI) by transmission-like reflection interferometers (TRIs), creating bright (transmission-like) interference fringes in the reflected light. TRIs employ asymmetric metal-dielectric mirrors with a “matching” absorbing layer. The calculations show that the shot noise-limited sensitivity of an FPMI with TRIs is nearly as high as that of a conventional FPMI (for the same quality of dielectric coatings). In the presence of scattered light or when the laser and interferometer modes are not coupled well enough, the new version of the FPMI offers considerable advantages due to the mode-filtering properties of a TRI.

Transfer functions of Fabry-Perot interferometers with a time-variable base. Part I. General theory

A multibeam interferometer with oscillating mirrors is theoretically investigated. The exact solution to the main equation for the interferometer and expressions for its transfer functions, i.e., generalized reflection and transmission factors, are obtained in a plane-wave approximation.

Transfer functions of fabry-perot interferometers with a time-variable base: Part II. Stationary mirror mode. “Superslow” mirror oscillation mode

A multibeam interferometer with oscillating mirrors is theoretically investigated. Transfer functions are presented and analyzed for two extreme cases, namely, for an interferometer with stationary mirrors and an interferometer operating in the mode of “superslow” mirror oscillations.