Relaxation phenomena in optically activated azo-materials

Kai Prasuhn; Ansgar Draude; Hilmar Franke; Roger A. Lessard

doi:10.1117/12.562553

9 December 2004 Relaxation phenomena in optically activated azo-materials

Kai Prasuhn, Ansgar Draude, Hilmar Franke, Roger A. Lessard

Proceedings Volume 5578, Photonics North 2004: Photonic Applications in Astronomy, Biomedicine, Imaging, Materials Processing, and Education; (2004) https://doi.org/10.1117/12.562553
Event: Photonics North, 2004, Ottawa, Ontario, Canada

Abstract

The photo-isomerisation of azo-compounds is used to record reversible holographic volume phase gratings in films of guest-host polymers. In situ recording of the diffraction efficiency has been performed for different azo-dyes in the non-polar Poly-methylmethacrylate (PMMA) and the polar Poly-α-methyl-styrene (PαMS) as a matrix. Within an exposure energy of 100 mJ/cm² a pronounced maximum is observed for s-polarised light. With the light pattern still on this is then reduced to a lower level. In case of the polar matrix, this process can be identified as an interaction of the dye molecules with the polymer matrix.

Citation Download Citation

Kai Prasuhn, Ansgar Draude, Hilmar Franke, and Roger A. Lessard "Relaxation phenomena in optically activated azo-materials", Proc. SPIE 5578, Photonics North 2004: Photonic Applications in Astronomy, Biomedicine, Imaging, Materials Processing, and Education, (9 December 2004); https://doi.org/10.1117/12.562553

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