12 April 1990 Holographic Recordings in Dye/Polymer Systems For Engineering Applications
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Proceedings Volume 1183, Holography '89; (1990) https://doi.org/10.1117/12.963797
Event: Holography '89, 1989, Varna, Bulgaria
Abstract
Since Gabor's first demonstration of reconstructed wavefronts, many holographic techniques provided interesting tools and applications. Presently the future of holography is strongly dependent upon new holographic recording thin films. Because of their excellent responses to high spatial frequency grating recordings (up to 6800 cycles/mm), photopolymers and photocrosslinking materials seem to be good candidates to overcome some limitations. Dichromated gelatin films demons-trated excellent properties for permanent recording grating applications like HOE construction but they are humidity sensitive and they need a chemical development. Today's holographic works need real-time like recording material and law cost organic materials as DYE/POLYMER systems offer some possibilities. We present a review of research works done in our holography laboratories of COPL at Universite Laval. Using an automated spatial frequency analyzer designed at COPL, DYE/POLYMER systems are characterized for transmission holography and also for applications involving real-time holography and four-wave mixing techniques. Also, most of our characterization studies consider volume polarization holograms. The second subject is devoted to polarization hologram recordings in thin colored polyvinyl alcohol films. Those AZO/WA solid films are erasable and can be used for many thousands duty cycles for polarization volume holograms. Holographic characterization studies are conducted in order to know best experimental conditions and applications that allow to use those films. Finally, sensitized PVA films will be discussed.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Roger A. Lessard, Roger A. Lessard, Jean J.A. Couture, Jean J.A. Couture, } "Holographic Recordings in Dye/Polymer Systems For Engineering Applications", Proc. SPIE 1183, Holography '89, (12 April 1990); doi: 10.1117/12.963797; https://doi.org/10.1117/12.963797
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