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Proceedings Paper

Study of electro-optic effects in organic chromophores by use of a waveguide geometry
Author(s): D. Anestopoulos; V. Giannetas; Peter Persephonis; G. Tsigaridas; Dimitrios Zevgolis; I. Spiliopoulos; J. Mikroyannidis; A. Ioannou
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Paper Abstract

The linear electro-optic coefficients r33 and r13 of a highly nonlinear organic chromophore were measured via an experimental method based on waveguide sample geometry. The technique used is simple and accurate and the interpretation is straightforward. Viscous solution of chromophore and PMMA were prepared in chlorophorm (CHCl3) and films were made by drop casting of these solutions onto metallic substrates. A DC poling electric field Vp was applied, in order to polarize the doped molecules and a linearly polarized beam from a He-Ne laser was left to pass through the film. A polarizer placed in front of a photodiode was used to determine the polarization state of the beam, allowing us to measure the magnitude of the induced birefringence Δn. The electro-optic coefficients difference (Δn=r33-r13) was calculated via the induced birefringence. The dependence of the coefficients r33 and r13 on the concentration of chromophore in PMMA was also investigated. By applying an AC electric field onto the film the dynamic electro-optic effects can be studied.

Paper Details

Date Published: 9 April 2003
PDF: 6 pages
Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); doi: 10.1117/12.513493
Show Author Affiliations
D. Anestopoulos, Univ. of Patras (Greece)
V. Giannetas, Univ. of Patras (Greece)
Peter Persephonis, Univ. of Patras (Greece)
G. Tsigaridas, Univ. of Patras (Greece)
Dimitrios Zevgolis, Univ. of Patras (Greece)
I. Spiliopoulos, Univ. of Patras (Greece)
J. Mikroyannidis, Univ. of Patras (Greece)
A. Ioannou, Hellenic Organization of Telecommunications S.A. (Greece)


Published in SPIE Proceedings Vol. 5131:
Third GR-I International Conference on New Laser Technologies and Applications
Alexis Carabelas; Giuseppe Baldacchini; Paolo Di Lazzaro; Dimitrios Zevgolis, Editor(s)

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