Steering accuracy of a spatial light modulator-based single beam steerer: guidelines and limitations
Paper in proceedings, 2008

The positioning accuracy when a phase-only one dimensional spatial light modulator (SLM) is used for beam steering is limited by the number of pixels and their quantized phase modulation. Optimizing the setting of the SLM pixels individually can lead to the inaccuracy being a significant fraction of the diffraction limited spot size. This anomalous behaviour was simulated numerically, and experiments showed the same phenomena with very good agreement. However, by including an extra degree of freedom in the optimization of the SLM setting, we show that the accuracy can be improved by a factor proportional to the number of pixels in the SLM.

phase modulation

beam steering

optical modulation

spatial light modulators

Author

David Engström

University of Gothenburg

Jörgen Bengtsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Emma Eriksson

University of Gothenburg

Mattias Goksör

University of Gothenburg

Proceedings of SPIE - The International Society for Optical Engineering

0277786X (ISSN) 1996756X (eISSN)

Vol. 7038 703829 (8 pp.)- 703829

Subject Categories

Atom and Molecular Physics and Optics

DOI

10.1117/12.798133

ISBN

9780819472588

More information

Created

10/6/2017