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Polymers 2017, 9(10), 472; doi:10.3390/polym9100472

The Chemistry and Physics of Bayfol® HX Film Holographic Photopolymer

Covestro Deutschland AG, Building D201, D-51365 Leverkusen, Germany
Author to whom correspondence should be addressed.
Received: 7 August 2017 / Revised: 21 September 2017 / Accepted: 22 September 2017 / Published: 26 September 2017
(This article belongs to the Special Issue Photo-Responsive Polymers)


Holographic photopolymers are a new technology to create passive diffractive optical elements by a pure laser interference recording. In this review, we explain the chemistry concepts of light harvesting in an interference pattern and the subsequent grating formation as chemical response. Using the example of the newly developed Bayfol® HX film we discuss the reaction-diffusion driven photo-polymerization process for an index modulation formation to create volume phase gratings. Further we elucidate the selection of monomer chemistry and discuss details of the recording conditions based on the concept of exposure dosage and exposure time. Influences ranging from high dosage recording to low power recording are explained and how to affect the desired diffraction efficiency. Finally, we outline and demonstrate the process to mass manufacturing of volume phase gratings. View Full-Text
Keywords: photopolymer; volume holographic optical element; photochemistry; interference recording; mass manufacturing photopolymer; volume holographic optical element; photochemistry; interference recording; mass manufacturing

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Bruder, F.-K.; Fäcke, T.; Rölle, T. The Chemistry and Physics of Bayfol® HX Film Holographic Photopolymer. Polymers 2017, 9, 472.

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