The relations between incident intensities and behaviors of two-wave coupled dynamic diffraction in a thick bacteriorhodopsin film

Guiying Chen, Chunping Zhang, Tang Xu, Jianguo Tian, Q. W. Song

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

When two coherent red beams (λ = 632.8 nm) are coupled in bacteriorhodopsin (bR) film with a small angle, diffraction beams occur. The diffraction intensities as a function of exposure time are quite different for different incident intensities. With low incident intensity, the diffraction intensity rises from zero to a maximum value as exposure time increasing. Conversely, for the higher incident intensity, the diffraction intensity increases from zero to maximum value and then decays till it tends to be a stable value. We found that the incident intensity which is corresponding to the maximum diffraction efficiency in a stable state is an optimal intensity, while incident intensity is lower than it, the dynamic diffraction intensities have no an overshooting peak; and if incident intensity is higher than it, an overshooting peak occurs in the diffraction intensities. Experimental and theoretical proofs were presented.

Original languageEnglish (US)
Pages (from-to)416-420
Number of pages5
JournalOptical Materials
Volume29
Issue number4
DOIs
StatePublished - Dec 2006

Keywords

  • Dynamic diffraction
  • bR film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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