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| Abstract: | Holographic grating with good storage life in poly(vinyl alcohol) based photopolymer film, prepared by gravity settling method, with reduced concentration of the dye was found to give good diffraction efficiency without crosslinking. The material was found to show good diffraction efficiency and sensitivity (75% diffraction efficiency at exposure energy of 80 mJ/cm2). The shelf life of the photopolymer solution could be improved by storage at a temperature 4 C in refrigerator |
| Description: | Journal of Applied Polymer Science, Vol. 125, 1238–1243 (2012) |
| URI: | http://dyuthi.cusat.ac.in/purl/4720 |
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| Effect of Conce ... s on Photopolymer Film.pdf | (1.033Mb) |
| Abstract: | An investigation on the panchromaticity of a silver-doped poly(vinyl alcohol)/acrylamide photopolymer system is presented in this paper. Frequency-doubled Nd:YAG (532 nm) and Arþ (488 nm) lasers were used for the characterization of the films. Previous studies using an He–Ne laser (632:8 nm) showed that plane-wave transmission grating with a high diffraction efficiency of 75% could be stored in the optimized film. From the present study, it was noted that transmission gratings with 70% diffraction efficiency could be recorded using Arþ and Nd:YAG lasers, thereby elucidating the possibility of using the developed photopolymer system as a competent panchromatic recording medium |
| Description: | APPLIED OPTICS / Vol. 50, No. 18 / 20 June 2011 |
| URI: | http://dyuthi.cusat.ac.in/purl/4709 |
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| Investigation o ... crylamide photopolymer.pdf | (782.6Kb) |
| Abstract: | Incorporation of silver ions into a dye-sensitized poly(vinyl alcohol)/acrylamide photopolymer is observed to give better performance compared to other metal-ion-doped photopolymer holographic recording media. Plane-wave transmission gratings were recorded in the photopolymer films using a He–Ne laser, and various holographic parameters were optimized so as to explore maximum potential of the material for various holographic applications. Silver-doped films showed good energy sensitivity, and gratings recorded in optimized film exhibited a diffraction efficiency of more than 75%. The potential of the material for holographic data storage applications is also studied using peristrophic multiplexing |
| Description: | 20 April 2009 / Vol. 48, No. 12 / APPLIED OPTICS |
| URI: | http://dyuthi.cusat.ac.in/purl/4715 |
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| Silver-doped ph ... holographic recording.pdf | (787.8Kb) |
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