Feedback-generated holograms and their tolerance to aberration

Edward G. S. Paige; Ranulf Howell Scarbrough

doi:10.1117/12.182063

5 August 1994 Feedback-generated holograms and their tolerance to aberration

Edward G. S. Paige, Ranulf Howell Scarbrough

Proceedings Volume 2321, Second International Conference on Optoelectronic Science and Engineering '94; (1994) https://doi.org/10.1117/12.182063
Event: Optoelectronic Science and Engineering '94: International Conference, 1994, Beijing, China

Abstract

We report on the generation of optical holograms by electronic feedback between intensity detectors in the output plane of the system and an electronically variable hologram. The holographic component is a spatial light modulator (SLM) acting in binary, phase-only, mode. Feedback is via a computer which determines pixel states using an iterative optimization algorithm. The results show optimal (correct to a single pixel) and near optimal SLM pixel patterns and near diffraction limited output. Similar performance is achieved when a strong phase aberrator is introduced into the system demonstrating the tolerance of the feedback generated holograms to aberration and providing a new means of determining phase aberration. Breaking of inversion symmetry as a consequence of introducing the aberrator is demonstrated. Results will be presented showing the effect of combining the feedback determined aberration correction with computer generated holograms.

Citation Download Citation

Edward G. S. Paige and Ranulf Howell Scarbrough "Feedback-generated holograms and their tolerance to aberration", Proc. SPIE 2321, Second International Conference on Optoelectronic Science and Engineering '94, (5 August 1994); https://doi.org/10.1117/12.182063

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