Fabrication of reflection gratings by contact copying of amplitude holographic gratings on a metal surface

Details Fabrication of reflection gratings by contact copying of amplitude holographic gratings on a metal surface Fabrication of reflection gratings by contact copying of amplitude holographic gratings on a metal surface

Apr 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2404..340m&link_type=abstract

Proc. SPIE Vol. 2404, p. 340-344, Diffractive and Holographic Optics Technology II, Ivan Cindrich; Sing H. Lee; Eds.

Physics

Optics

Scientific paper

This paper describes the contact copying of amplitude transmission holographic gratings. Master gratings (MG) are written in silver halide sensitized gelatine. A smooth and flat sheet is coated with a layer of negative photoresist constituted from a combination of polyvinyl alcohol, ammonium dichromate and Arabic gum, then the MG is put in contact with the metal surface and exposed by a mercury lamp. After processing with deionized water at (35 degree(s)C), a reflection grating is obtained. For a MG with 117 l/mm of spatial frequency and 10% of diffraction efficiency (DE), we have obtained a DE of 12%.

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