title: Response analysis of holography-based modal wavefront sensor.
abstract: The crosstalk problem of holography-based modal wavefront sensing (HMWS) becomes more severe with increasing aberration. In this paper, crosstalk effects on the sensor response are analyzed statistically for typical aberrations due to atmospheric turbulence. For specific turbulence strength, we optimized the sensor by adjusting the detector radius and the encoded phase bias for each Zernike mode. Calibrated response curves of low-order Zernike modes were further utilized to improve the sensor accuracy. The simulation results validated our strategy. The number of iterations for obtaining a residual RMS wavefront error of 0.1λ is reduced from 18 to 3.
authors.affiliation: Institut für Technische Optik, SCoPE, Stuttgart Universität, Stuttgart 70569, Germany. dong@ito.uni‐stuttgart.de
authors.forename: Shihao
authors.initials: S
authors.lastname: Dong
authors.forename: Tobias
authors.initials: T
authors.lastname: Haist
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Osten
authors.forename: Thomas
authors.initials: T
authors.lastname: Ruppel
authors.forename: Oliver
authors.initials: O
authors.lastname: Sawodny