Spatial light modulator system for application as a dynamic diffractive element and in optical image processing

Sven Krueger; Joern Kamps; Guenther K.G. Wernicke; Hartmut Gruber; Nazif Demoli; Matthias Duerr; Stephan Teiwes

doi:10.1117/12.379366

10 March 2000 Spatial light modulator system for application as a dynamic diffractive element and in optical image processing

Sven Krueger, Joern Kamps, Guenther K.G. Wernicke, Hartmut Gruber, Nazif Demoli, Matthias Duerr, Stephan Teiwes

Author Affiliations +

Proceedings Volume 3951, Diffractive/Holographic Technologies and Spatial Light Modulators VII; (2000) https://doi.org/10.1117/12.379366
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

Abstract

The importance of spatial light modulators (SLMs) in optical systems is increasing. This paper presents our work on an SLM system based on Sony LCD. We show the optimization of the LCD modulation behavior concerning the application as dynamical diffractive element, and the implementation of images and filter functions in optical correlators and pattern projection systems. Measurements of the coupled amplitude and phase modulation and the planarity of the display at different wavelengths lead to correction functions and several optimized operation modes, e.g. gray scale or binary amplitude modulation. The optimization in the amplitude mode leads either to high contrast images of reduced gray levels or to a mostly linearized full gray scale mode. A similar way leads to optimized modes for the phase modulation and to a realization of a total phase shift of 2(pi) . The increase of the processing performance of phase-only filters in optical correlators is presented. Furthermore, diffraction efficiency (DE) measurements of Fourier holograms addressed to the SLM prove the optimization process, compared to the non-optimized and the theoretical DE-values. So, estimations can be made concerning the application of the SLM as dynamical diffractive element.

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Sven Krueger, Joern Kamps, Guenther K.G. Wernicke, Hartmut Gruber, Nazif Demoli, Matthias Duerr, and Stephan Teiwes "Spatial light modulator system for application as a dynamic diffractive element and in optical image processing", Proc. SPIE 3951, Diffractive/Holographic Technologies and Spatial Light Modulators VII, (10 March 2000); https://doi.org/10.1117/12.379366

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