Comparison of pulsed versus cw behavior of the diffraction efficiency of bacteriorhodopsin thin films

Colleen Mary Fitzpatrick; Kal Spariosu

doi:10.1117/12.323775

18 September 1998 Comparison of pulsed versus cw behavior of the diffraction efficiency of bacteriorhodopsin thin films

Colleen Mary Fitzpatrick, Kal Spariosu

Proceedings Volume 3486, International Conference on Optical Holography and its Applications; (1998) https://doi.org/10.1117/12.323775
Event: International Conference on Optical Holography and Its Applications, 1997, Kiev, Ukraine

Abstract

The feasibility of using the organic nonlinear photopolymer bacteriorhodopsin in holographic interferometry has been of growing interest in recent years because of its real time properties and its relatively high diffraction efficiency. In this paper, a comprehensive analysis of the behavior of bacteriorhodopsin thin films under both CW and pulsed conditions will be presented. Because bR is an erasable material, a simultaneous read-write geometry was used for these experiments, and data taken as a function of both read and write parameters. In the CW case, the dynamic behavior of the diffraction efficiency has been characterized in the initial growth region, to obtain sensitivity curves, and in the decay region, to obtain the behavior of the M-state lifetime. In the pulsed experiments, the behavior of the material was observed in the growth region, to study the reciprocity behavior of the material. From the data, a comparison between the behavior of the diffraction efficiency was made for pulsed and CW illumination, in terms of diffraction efficiency, sensitivity, and the time-dependent M- state population.

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Colleen Mary Fitzpatrick and Kal Spariosu "Comparison of pulsed versus cw behavior of the diffraction efficiency of bacteriorhodopsin thin films", Proc. SPIE 3486, International Conference on Optical Holography and its Applications, (18 September 1998); https://doi.org/10.1117/12.323775

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KEYWORDS

Diffraction

Argon

Thin films

YAG lasers

Absorption

Continuous wave operation

Pulsed laser operation

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