Please use this identifier to cite or link to this item: doi:10.22028/D291-24450
Title: The production of Fresnel lenses in sol-gel derived Ormocers by holography
Author(s): Oliveira, Peter William de
Krug, Herbert
Künstle, Holger C.
Schmidt, Helmut K.
Language: English
Year of Publication: 1994
OPUS Source: Sol-gel optics III : 25-27 July 1994, San Diego, California / John D. Mackenzie, chair/editor; sponsored by SPIE--The International Society for Optical Engineering. - Bellingham, Wash., USA : SPIE, 1994. - (SPIE proceedings series ; 2288), S. 554-562
SWD key words: Nanokomposit
DDC notations: 620 Engineering and machine engineering
Publikation type: Conference Paper
Abstract: Micro Fresnel lenses were prepared from photosensitive organic-inorganic nanocomposites of the Ormocer-type by irradiation of films of 10 µm in thickness with an interference pattern of two laser beams, mixing a planar reference wavefront and a spherical object wavefront. To monitor the polymerization behavior of the organic groups during irradiation under real time conditions, a characterization method was developed to study changes in optical thickness n d by measuring changes of index of refraction and shrinkage during polymerization. Three-dimensional Fresnel structures were obtained by removing the unpolymerized areas by a solvent. Variation of index of refraction can also be obtained by diffusion of monomers in regions of higher light intensity. A model, similar to the Colburn-Haines model is presented.
Link to this record: urn:nbn:de:bsz:291-scidok-27614
ISBN: 0-8194-1612-6
Date of registration: 11-Mar-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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