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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.
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