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Q: Quantenoptik

Q 34: Optical Applications I

Q 34.4: Talk

Friday, April 6, 2001, 16:45–17:00, H 3010

Can M² be determined using Shack-Hartmann measurements? — •B. Neubert¹, G. Huber¹, and W.-D. Scharfe² — ¹Institut für Laser-Physik, Jungiusstr. 9a, 20355 Hamburg — ²Rofin-Sinar Laser, Berzeliusstr. 83, 22113 Hamburg

Shack-Hartmann detectors are wavefront sensors widely used in optics. It was proposed to use Shack-Hartmann pictures to measure the times diffraction limit number M². In this talk an example of Hermite-Gaussian beams is used to demonstrate that one Shack-Hartmann picture is not sufficient to determine M².