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5 June 2009 Experimental modules covering imaging, diffraction, Fourier optics and polarization based on a liquid-crystal cell SLM
Andreas Hermerschmidt
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Proceedings Volume 9666, 11th Education and Training in Optics and Photonics Conference; 96660Q (2009) https://doi.org/10.1117/12.2207974
Event: Eleventh International Topical Meeting on Education and Training in Optics and Photonics, 2009, St. Asaph, United Kingdom
Abstract
In close collaboration with four German universities, we have developed tutorials for experiments based on a transmissive liquid-crystal spatial light modulator (SLM). The experimental tutorials are grouped in six project modules, which cover a wide range of phenomena and have different levels of difficulty. At a basic level, students can investigate the SLM in its probably most well-known application as an image-generating element in a simple optical projector setup. At more advanced levels, the application as an adaptive optical element can be investigated in three different projects covering wave-optical phenomena. The fields covered include Fourier Optics using the SLM as a dynamic fan-out beam-splitter or kinoform, Computer-Generated Holography and basic Interferometry. For the support of these projects, software was developed which permits the generation of adaptive optical structures by the student with a user-friendly interface, while the underlying algorithms are explained in the theoretical tutorial. The modulation of the light by the twisted-neumatic liquid crystal cells of the SLM can be investigated in the two most advanced projects. In the first one, the parameters of the cell and the components of its Jones matrix can be derived from transmission measurements with rotatable polarizers at a number of different wavelengths. This project gives insight to the Jones matrix calculus at the level required for the analysis. In the second one, the complex-valued transmission of the SLM is determined by measuring the diffraction efficiency of dynamically addressed Ronchi gratings.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Andreas Hermerschmidt "Experimental modules covering imaging, diffraction, Fourier optics and polarization based on a liquid-crystal cell SLM", Proc. SPIE 9666, 11th Education and Training in Optics and Photonics Conference, 96660Q (5 June 2009); https://doi.org/10.1117/12.2207974
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KEYWORDS
Spatial light modulators
Diffraction
Liquid crystals
Phase shifts
Polarizers
Diffraction gratings
Optical components
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