Applications of photoanisotropic polymer films in optical information processing and as nonlinear optical storage media

Burkhard Fleck; Lutz Wenke

doi:10.1117/12.263119

31 December 1996 Applications of photoanisotropic polymer films in optical information processing and as nonlinear optical storage media

Burkhard Fleck, Lutz Wenke

Author Affiliations +

Proceedings Volume 2866, International Conference on Holography and Optical Information Processing (ICHOIP '96); (1996) https://doi.org/10.1117/12.263119
Event: International Conference on Holography and Optical Information Processing, 1996, Nanjing, China

Abstract

The use of optical interferometric measurement techniques for the visualization and characterization of transient processes in transparent media and the evaluation of dynamic deformations is of increasing interest in many branches of industry and research. Methods like holographic interferometry (real-time, double exposure) have the disadvantage that the handling of the storage media (photo plates, thermoplastics) is difficult and expensive devices are needed (for instance thermoplastic cameras). Therefore one aim of optics research is the development and the implementation of novel optical storage media which are easy to handle and have potentially low cost. Furthermore a great number of modern optical methods require coherent electromagnetic waves, but the information is often carried by incoherent illumination (CCD-cameras) or by laser radiation with wavelengths (due to the absorption characteristics of the object under investigation) which are not suited for current materials or devices. For that reason the conversion of information from one wave to a wave with another wavelength or from incoherent light to coherent light is necessary. In this paper we describe two possible applications of different photoanisotropic polymer samples. At first these samples are used as holographic storage media in real-time holographic interferometry and at second as nonlinear media for incoherent-to-coherent conversion. The first example includes the principal experimental setup. The second example shows the possibility of incoherent-to- coherent conversion of information. The intensity transfer function of this conversion process is calculated.

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Burkhard Fleck and Lutz Wenke "Applications of photoanisotropic polymer films in optical information processing and as nonlinear optical storage media", Proc. SPIE 2866, International Conference on Holography and Optical Information Processing (ICHOIP '96), (31 December 1996); https://doi.org/10.1117/12.263119

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KEYWORDS

Polymers

Polarization

Holographic interferometry

Optical storage

Anisotropy

Holography

Dielectric polarization

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