Abstract
In this work were investigated the second order nonlinear optical properties of a group of Disperse Red 1 based electro-optic fluorinated copolymers, synthesized with two fluorinated monomers: the α -fluoroacrylate monomer bearing the 2,2,2-trifluoroethyl side group and the α -fluoroacrylate monomer bearing the Disperse Red 1 chromophore. By means of nonlinear ellipsometry at λ = 1550 nm, the poling-induced electro-optic tensor main component r 33 was retrieved and the stability of the second order nonlinear properties were measured giving a depolarization temperature T dep = 114°C and an activation energy E A ≈ 60 kcal/mol.
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