Study of electro-optic effects in organic chromophores by use of a waveguide geometry

D. Anestopoulos; V. Giannetas; Peter Persephonis; G. Tsigaridas; Dimitrios Zevgolis; I. Spiliopoulos; J. Mikroyannidis; A. Ioannou

doi:10.1117/12.513493

9 April 2003 Study of electro-optic effects in organic chromophores by use of a waveguide geometry

D. Anestopoulos, V. Giannetas, Peter Persephonis, G. Tsigaridas, Dimitrios Zevgolis, I. Spiliopoulos, J. Mikroyannidis, A. Ioannou

Author Affiliations +

Proceedings Volume 5131, Third GR-I International Conference on New Laser Technologies and Applications; (2003) https://doi.org/10.1117/12.513493
Event: Third GR-I International Conference on New Laser Technologies and Applications, 2003, San Diego, CA, United States

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 V_p 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.

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D. Anestopoulos, V. Giannetas, Peter Persephonis, G. Tsigaridas, Dimitrios Zevgolis, I. Spiliopoulos, J. Mikroyannidis, and A. Ioannou "Study of electro-optic effects in organic chromophores by use of a waveguide geometry", Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); https://doi.org/10.1117/12.513493

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