Please use this identifier to cite or link to this item:
- Running holograms in azopolymer films
- Universidade Federal do ABC (UFABC)
- Universidade Estadual Paulista (UNESP)
- We report investigations on running holograms recorded in an azopolymer film made of a poly(methyl methacrylate) matrix doped with Disperse Red 1. Two-wave mixing experiments were carried out in the symmetrical transmission geometry. A stabilization technique was employed for active control of the phase shift between the real-time hologram and the interference pattern. Depending on the imposed phase shift, a running hologram propagates in the material in the form of an isomerization wave created by a continuous erasing-rewriting process. Diffraction efficiencies and the hologram velocities were measured as functions of the holographic phase shift at the wavelengths 515 and 488 nm. The experimental results were compared to theoretical curves obtained from a simplified model of the isomerization kinetics. The selective contributions of the phase and the amplitude gratings to the whole hologram were also determined. © 2013 Springer-Verlag Berlin Heidelberg.
- Applied Physics B: Lasers and Optics, v. 111, n. 1, p. 103-109, 2013.
- Amplitude gratings
- Azo-polymer films
- Holographic phase shift
- Interference patterns
- Isomerization kinetics
- Poly(methyl methacrylate) matrix
- Stabilization techniques
- Transmission geometries
- Phase shift
- Phase shifters
- Acesso restrito
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.