Back to Search
Start Over
Experimental validation of optimization concepts for focal-plane image processing with adaptive optics
- Source :
- Proceedings of SPIE - The International Society for Optical Engineering
- Publication Year :
- 2012
-
Abstract
- We show experimental results demonstrating the feasibility of an extremely fast sequential phase-diversity (SPD) algorithm for point sources. The algorithm can be implemented on a typical adaptive optics (AO) system to improve the wavefront reconstruction beyond the capabilities of a wavefront sensor by using the information from the imaging camera. The algorithm is based on a small-phase approximation enabling fast numerical implementation, and it finds the optimal wavefront correction by iteratively updating the deformable mirror. Our experiments were made at an AO-setup with a 37 actuator membrane mirror, and the results show that the algorithm finds an optimal image quality in 5-10 iterations, when the initial wavefront errors are typical non-common path aberrations having a magnitude of 1-1.5 rad rms. The results are in excellent agreement with corresponding numerical simulations.
Details
- Database :
- OAIster
- Journal :
- Proceedings of SPIE - The International Society for Optical Engineering
- Notes :
- Amsterdam, The Netherlands
- Publication Type :
- Electronic Resource
- Accession number :
- edsoai.on1291829748
- Document Type :
- Electronic Resource