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Fabrication of Phase Gratings by Nd:YAG Laser Irradiation

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Abstract

We present a simple, low cost method for fabricating phase gratings by UV irradiation on the surface of lead-silicate glasses. We use the fourth harmonic of a Nd:YAG Q-switch laser (266 nm) to ablate the pattern generated for a commercial phase mask. The quality of the phase gratings is evaluated through the analysis of its efficiency. Likewise, a study of the efficiency variation with the irradiation time of the sample is presented.

© 2003 Optical Society of America

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