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Non-linear optical properties of epoxy-based polymers with covalently attache chromophores and metallic complexes

Borshch A., Brodyn M., Lyakhovetsky V., Kutsenko A., Maloletov S.

Materials Science

2002

Vol. 20, No. 4

29-48

Non-linearl refraction and absorption in polymer structures based upon diglicidylether of bisphenol A has been studied. The polymers contain organo-metallic complex of nickel(II) NiL(ClO4) 2- or 4-amino-azobenzene as non-linear optically active side groups covalently attached at each monomer unit. The studies have been carried out by polarization technique together with a real time pump and probe technique, dynamic holography and Z-scan. The materials were shown to exhibit fast non-linear response (relaxation time is about 20 ns) together with slow one (relaxation time of the order of tens of hours). This makes it possible to record fast- and long-lived (quasi-stationary) phase holograms. The analysis of possible mechanisms for the polymer refractive index non-linear response in the time range from 10-8 to 105 is presented. In particular, the role of electron polarizability, thermal excitation of the polymer, orientation of the chromophore molecules, and trans-cis isomerization processes are discussed.

Determination of the thickness and optical constants of polyarylates with heterocyclic side chain group

Ratusznik G.J., Najechalski P., Ciolek R., Pura B., Zadrozna I., Mrozinski H.

Optica Applicata

2001

Vol. 31, nr 1

103-114

The investigation of the optical properties of the novel polyarylates with heterocyclic side chain groups is reported. Optical properties of the polymers obtained have been measured. Mechanical and thermal properties are also presented. The refractive index n( lambda ) and susceptibility chi /sup (1)/ have been determined for different compositions of polymers.