Photorefractive gratings recording in reversible polymer films containing 4-keto bacteriorhodopsin under absorption saturation

Author

Barmenkov, Yu.O. ; Leppanen, V.-P. ; Jaaskelainen, T. ; Kozhevnikov, N.M. ; Starodumov, A.N.

Author_Institution

Centro de Investigaciones en Opt., Leon, Mexico

fYear

1998

fDate

10-14 Aug 1998

Firstpage

355

Lastpage

357

Abstract

Because the change in the dielectric constant of the medium is proportional to the concentration of bacteriodopsin (BR) molecules in photoexcited state, the absorption saturation leads to steady-state amplitudes of phase grating written in BR by sufficiently intense light beams. Here we describe peculiarities of the initial stage of the grating writing under the absorption saturation, which can be explained by existence of two photocycles

Keywords

holographic gratings; optical films; optical polymers; optical saturable absorption; photorefractive materials; proteins; 4-keto bacteriorhodopsin; absorption saturation; bacteriodopsin molecules; dielectric constant; grating writing; intense light beams; phase grating; photocycles; photoexcited state; photorefractive gratings recording; reversible polymer films; steady-state amplitudes; Absorption; Gratings; Holographic optical components; Holography; Laser beams; Optical films; Optical interferometry; Optical recording; Photorefractive effect; Polymer films;

fLanguage

English

Publisher

ieee

Conference_Titel

Nonlinear Optics '98: Materials, Fundamentals and Applications Topical Meeting

Conference_Location

Kauai, HI

Print_ISBN

0-7803-4950-4

Type

conf

DOI

10.1109/NLO.1998.710308

Filename

710308