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Proceedings Paper

Holographic recording with a near-IR sensitive photopolymer system using a laser diode
Author(s): Istvan Banyasz; Daniel-Joseph Lougnot; Colette Turck
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Paper Abstract

Photopolymerizable formulations exhibiting a fair sensitivity in the near IR were developed. These materials were formulated of a mixture of acrylate multifunctional monomers and oligomers with an initiating system working through a photoredox process. Depending on the spectrum of the sensitizers, this system absorbs various laser lines in the red (Kr+ at 676, 752 and 799 nm or laser diode at (lambda) > 750 nm). In particular, it was holographed with a monomode laser diode emitting in the 780 nm region, and bright transmission gratings were obtained. Typically, an exposure of ca. 500 mJ/cm2 is necessary to reach complete inactivation of the material and to produce gratings with diffraction efficiency exceeding 40% with a spatial frequency of 800 lines/mm. The quality of the holographic recording was studied by recording multiple series of holograms of a resolution test target. In addition, these materials that contain crosslinkable monomers and convert to a tridimensional network upon irradiation, show a self-processing character allowing storage of optical information in situ. The applicability of this material to real time holographic interferometry was demonstrated.

Paper Details

Date Published: 23 March 1995
PDF: 8 pages
Proc. SPIE 2405, Holographic Materials, (23 March 1995); doi: 10.1117/12.205361
Show Author Affiliations
Istvan Banyasz, Ecole Nationale Superieure de Chimie de Mulhouse/CNRS (France)
Daniel-Joseph Lougnot, Ecole Nationale Superieure de Chimie de Mulhouse/CNRS (France)
Colette Turck, Ecole Nationale Superieure de Chimie de Mulhouse/CNRS (France)

Published in SPIE Proceedings Vol. 2405:
Holographic Materials
T. John Trout, Editor(s)

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