Effect of phase noise on fringe visibility of LISA telescopes in the presence of tilt and astigmatism aberrations

TL;DR

This paper analyzes how phase noise affects fringe visibility in LISA telescopes, especially considering tilt and astigmatism aberrations, and establishes an upper limit for phase noise in high-precision gravitational wave detection.

Contribution

It provides a detailed analysis of the impact of phase noise on fringe visibility in LISA telescopes, including the effects of tilt and astigmatism aberrations, and identifies an upper bound for phase noise.

Findings

Phase noise significantly impacts fringe visibility.

Tilt and astigmatism aberrations have minimal effect but are considered.

An upper bound for phase noise in LISA is established.

Abstract

An in-depth analysis of GWs, LISA and its telescopes has been carried out in this paper, especially for the case in which all aberrations, except astigmatism and tilt are optimised. Though it is popular to neglect these two aberration types for their minute effect on the wavefront, a test of this negligence has been carried out in an extreme scenario of high phase noise. The relationship between phase noise and fringe visibility has been analysed, resulting in the discovery of an upper bound for allowed phase noise in LISA.