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Proceedings Paper

Large-diameter bacteriorhodopsin films for applications in nondestructive testing
Author(s): Norbert A. Hampp; Arne Seitz; Thorsten Juchem; Dieter Oesterhelt
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Paper Abstract

Bacteriorhodopsin (BR) films with dimension of 100 mm X 100 mm have been developed for applications in non- destructive testing. Films made from the photochromic retinal protein BR have been successfully employed in a variety of optical applications. Among them holographic interferometry for non-destructive testing which is one of the applications where the aperture of the BR-films used for recording plays an important role. The BR-films available earlier had an aperture of about 2/3 inch. Due to this limit size it was necessary to focus the light scattered from the object under investigation to the BR-film by means of lenses which in turn limit the optical resolution of the whole system. Now BR-films with a more than 50-fold larger are have been developed which allow lensless recording of the holograms. The optical quality of the films, in particular the spatial homogeneity of their optical density and their light sensitivity, is constant over the full aperture within a few percent. Applications of this new type of BR-films in non-destructive testing of ceramic parts are presented.

Paper Details

Date Published: 18 May 1999
PDF: 9 pages
Proc. SPIE 3623, Organic Photonic Materials and Devices, (18 May 1999); doi: 10.1117/12.348404
Show Author Affiliations
Norbert A. Hampp, Philipps Univ. Marburg (Germany)
Arne Seitz, Philipps Univ. Marburg (Germany)
Thorsten Juchem, Philipps Univ. Marburg (Germany)
Dieter Oesterhelt, Max-Planck Institute for Biochemistry (Germany)


Published in SPIE Proceedings Vol. 3623:
Organic Photonic Materials and Devices
Bernard Kippelen, Editor(s)

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