Photoinduced changes in the refractive index of azo-dye/polymer systems
- 24 April 1995
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 66 (17) , 2174-2176
- https://doi.org/10.1063/1.113937
Abstract
The photoinduced isotropic and anisotropic changes in the refractive index of dye/polymer guest‐host systems are investigated. The values obtained are compared to the diffraction efficiencies of scalar and polarizationholographic gratings, recorded in the same polymer systems. It is concluded that the induced anisotropy is related to the dye molecules involved in the photoprocesses, whereas the isotropic changes, which are much stronger, are related to the polymer matrix as well.Keywords
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