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Two-photon polarization data storage in bacteriorhodopsin films and its potential use in security applications

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Rhinow,  Daniel
Department of Structural Biology, Max Planck Institute of Biophysics, Max Planck Society;

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Citation

Imhof, M., Rhinow, D., & Hampp, N. (2014). Two-photon polarization data storage in bacteriorhodopsin films and its potential use in security applications. Applied Physics Letters, 104: 081921. doi:10.1063/1.4867164.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-D470-3
Abstract
Bacteriorhodopsin (BR) films allow write-once-read-many recording of polarization data by a two-photon-absorption (TPA) process. The optical changes in BR films induced by the TPA recording were measured and the M€uller matrix of a BR film was determined. A potential application of BR films in security technology is shown. Polarization data can be angle-selective retrieved with high signal-to-noise ratio. The BR film does not only carry optical information but serves also as a linear polarizer. This enables that polarization features recorded in BR films may be retrieved by merely using polarized light from a mobile phone display.