Variations on a Hartmann theme.
Abstract
The author explores modifications of the classical Hartmann wavefront sensing technique that can be used to improve its accuracy, dynamic range, and spatial resolution. He describes a differential sensor with variable sensitivity. The author reviews the use of various possible Hartmann masks and discusses their interferometric properties. He propose the use of Fourier analysis and shows its relationship to moire methods. The author finally envisages the possibility of mapping both the slope and the total curvature (Laplacian) of the wavefront with the same setup.
- Publication:
-
Optical Engineering
- Pub Date:
- October 1990
- DOI:
- 10.1117/12.55721
- Bibcode:
- 1990OptEn..29.1239R
- Keywords:
-
- Adaptive Optics