25 September 1998 Particular holographic applications developed with self-processing polymer
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Proceedings Volume 3417, Photopolymer Device Physics, Chemistry, and Applications IV; (1998) https://doi.org/10.1117/12.323492
Event: Lasers and Materials in Industry and Opto-Contact Workshop, 1998, Quebec, Canada
Abstract
It was shown that self-processing photopolymerizable system can be used as holographic recording media in the field of microholography. Gabor holograms were recorded with high intensity single laser pulses. The in-line set-up involved a FD pulsed YAG laser and the pulse duration was about 9 ns. A power per pulse of ca 20 mJ corresponding to an energy density at the sample of 150 mJ/cm-2 was capable of generation in the emulsion excited species and of inducing an efficient polymerization by a free radical mechanism. Incoherent preillumination of the sample by a suitable UV source was necessary to obtain this result with one laser pulse only. Images corresponding to these phase in-line holograms were reconstructed with fair resolution using an He-Ne laser, a wavelength at which the polymer material is not sensitive. Apart from this, the pairing of similar emulsions with a cw green He-Ne laser was possible. The available power density was reduced down to 0.4 mW/cm-2 and gratings diffraction efficiencies of approximately 50 percent were achieved for an exposure time of 2 minutes. In that case, the purpose was to design low- cost, unsophisticated and not overly time-consuming manipulations, notably for simple demonstrations or university experiments of holography and interferometry.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christiane Carre Morlet-Savary, Christiane Carre Morlet-Savary, Christelle Heinis, Christelle Heinis, Daniel-Joseph Lougnot, Daniel-Joseph Lougnot, } "Particular holographic applications developed with self-processing polymer", Proc. SPIE 3417, Photopolymer Device Physics, Chemistry, and Applications IV, (25 September 1998); doi: 10.1117/12.323492; https://doi.org/10.1117/12.323492
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