title: Bicolor surface reliefs in azobenzene side-chain polymers.
abstract: Holographic studies in azobenzene side-chain polymers reveal light-induced periodic surface reliefs at temperatures far below the glass transition temperature. We performed experiments with two-color holography on an azobenzene polymer. An intensive and linear polarized homogeneous blue pump beam illuminated the sample, and two red beams-outside the trans-azobenzene absorption-were used to inscribe the grating. A surface relief was obtained only with the pump beam on and only if its polarization was perpendicular to the writing beams. The findings are discussed in the frame of a recent mean-field model.
authors: C
authors: C
authors: Jäger
authors: T
authors: T
authors: Bieringer
authors: S J
authors: SJ
authors: Zilker