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Proceedings Paper

Holographic system for nondestructive testing, vibration analysis, and size measurement using bacteriorhodopsin films as optical memory media
Author(s): Norbert A. Hampp; Thorsten Juchem; Klaus Anderle
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Paper Abstract

A turn-key system for holographic interferometry with bacteriorhodopsin films as optical recording media is presented. Four inch wide bacteriorhodopsin films are used for lensless holographic recording. No consumables are required for operation. Several interferometric techniques like time-averaging, real-time, double-exposure and the phase-shifting method can be realized with the same system. Switching between the different operation modes is possible under software control within a few seconds. An additional feature is that the system may be used for the determination of the dimensions of the investigated objects with a resolution down to several micrometesr. The optical setup is presented. The properties of the bacteriorhodopsin films installed, in particular their optical homogeneity, the exposure required, their holographic diffraction efficiency and their hologram rise and erasure times, are discussed. The optical resolution of the bacteriorhodopsin films of 5000 lines/mm is far beyond that of the rest of the holographic system which is limited mainly by the CCD camera used for read-out. Optical setups with higher and variable optical read-out resolution are presented which allow to exploit the capabilities of bacteriorhodopsin films to a better extent.

Paper Details

Date Published: 19 May 2000
PDF: 8 pages
Proc. SPIE 3939, Organic Photonic Materials and Devices II, (19 May 2000); doi: 10.1117/12.386361
Show Author Affiliations
Norbert A. Hampp, Philipps Univ. Marburg (Germany)
Thorsten Juchem, Philipps Univ. Marburg (Germany)
Klaus Anderle, Philipps Univ. Marburg (Germany)

Published in SPIE Proceedings Vol. 3939:
Organic Photonic Materials and Devices II
Donal D. C. Bradley; Bernard Kippelen, Editor(s)

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