Klaus Freischlad

Fourier description of digital phase-measuring interferometry

Chris L. Koliopoulos, Klaus Freischlad, C. Koliopoulos, 1990 .

Wavefront Reconstruction from Noisy Slope or Difference Data Using the Discrete Fourier Transform

Chris L. Koliopoulos, Klaus Freischlad, 1986, Other Conferences.

A Shearing Interferometer For Astronomical Wavefront Sensing

Chris L. Koliopoulos, Klaus Freischlad, 1986, Astronomical Telescopes and Instrumentation.

Method for evaluating interferograms and interferometers

Karl-Heinz Schuster, Michael F. Kuechel, Klaus Freischlad, 1991 .

Measurement of transmitted wavefront error and homogeneity with a low-coherence interferometer

Klaus Freischlad, 2021, Optifab.

Modal estimation of a wave front from difference measurements using the discrete Fourier transform

Chris L. Koliopoulos, Klaus Freischlad, C. Koliopoulos, 1986 .