Optimization of the holographic wavefront sensor for open-loop adaptive optics under realistic turbulence. Part I: simulations
Abstract
The modal holographic wavefront sensor enables fast measurement of individual aberration modes without the need for time-consuming calculations. However, the measurement accuracy suffers greatly from intermodal crosstalk, caused when the wavefront contains more aberrations than the one to be measured. In this paper, we present sensor optimization to minimize this effect and show the improvement when using Karhunen–Lòeve instead of Zernike modes as the basis. Finally, we show in simulation that an open-loop adaptive optics system based on the optimized sensor can be used to correct the effect of realistic, dynamic atmospheric turbulence on a wavefront and increase its Strehl ratio significantly.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 16, 2021
- Source ID
- 10.1364/ao.425397
Entities
People
- Andreas Zepp
- Karin Stein
- Szymon Gladysz
- Wolfgang Osten
Organizations
- Office of Naval Research Global
- University of Stuttgart