Photo-induced anisotropic photoelectric response in oriented bacteriorhodopsin films

Jian Xu, P. Bhattacharya, G. Váró

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The photo-induced anisotropic properties of the chromophore protein bacteriorhodopsin (bR) are of interest for possible applications in optical image processing and spatial filtering. Here we report experimental results on the photo-induced anisotropic photoelectric response of dried oriented bR films. A polarization dependent photovoltage is measured across an ITO/bR/ITO photodetector. The anisotropy is introduced by a 632.8 nm linearly polarized pump beam and is detected with a 594.1 nm polarized probe beam. The influence of the pump light intensity on the photovoltage anisotropy has also been investigated. A model, based on the polarization dependent photoselection of the bR molecules reasonably explains the behavior of the measured data. The observed effect can be used to construct a polarization sensitive bR-based bio-photoreceiver.

Original languageEnglish (US)
Pages (from-to)321-326
Number of pages6
JournalOptical Materials
Volume22
Issue number4
DOIs
StatePublished - Jun 1 2003

Fingerprint

Bacteriorhodopsins
photovoltages
Polarization
ITO (semiconductors)
Anisotropy
polarization
Pumps
pumps
anisotropy
spatial filtering
Chromophores
Photodetectors
luminous intensity
chromophores
photometers
image processing
Image processing
proteins
Proteins
Molecules

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Xu, Jian ; Bhattacharya, P. ; Váró, G. / Photo-induced anisotropic photoelectric response in oriented bacteriorhodopsin films. In: Optical Materials. 2003 ; Vol. 22, No. 4. pp. 321-326.
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Photo-induced anisotropic photoelectric response in oriented bacteriorhodopsin films. / Xu, Jian; Bhattacharya, P.; Váró, G.

In: Optical Materials, Vol. 22, No. 4, 01.06.2003, p. 321-326.

Research output: Contribution to journalArticle

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