First order hyperpolarizability of benzothiazole salts

Eva Noskovičová ¹ Dušan Lorenc ^2,1 Alexandra Číbová ¹ Dušan Velič ^1,2

¹Comenius University in Bratislava, Faculty of Natural Sciences, Ilkovičova 6, Bratislava
²Internacional Laser Centre, Ilkovičová 3, Bratislava

noskoviov.nereyn.eva1@gmail.com

A first order hyperpolarizability β of benzothiazolium-substituted conjugated donor-π-acceptor dipoles was determined within this work by the hyper-Rayleigh scattering (HRS) metod i.e. by the second order harmonic light scattering in solutions. The 800 nm, 1300 and 1340 output wavelength of a Ti:Sapphire laser system and an optical parametric amplifier was used as the pump source. The second-order nonlinear optical response was detected at 400 nm, 650 and 670 nm respectively. First hyperpolarizabilities were subsequently determined by using the internal and external reference method and their values were determined from 133 to 563 esu.

This research is sponsored by NATO's Public Diplomacy Division in the framework of "Science for Peace," project Nr. SfP984698.

[1] Sutherland D.R.: Handbook of Nonlinear Optics, Second Ed., New York, 2003.
[2] Franz E.; Harper C. E.; Coe J. B.; Zahradník P.; Clays K.; Asselberghs I. Proc. of SPIE 2008, 6999, 699923.
[3] J. Campo, F. Desment, W. Wenseleers, E. Goovaerts, Highly Sensitive Setup for Tunable Wavelength Hyper-Rayleigh Scattering with Parallel Detection and Calibration Date for Various Solvents. OPTICS EXPRESS, 2009. 17(6), p. 4587-4604.

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First order hyperpolarizability of benzothiazole salts

First order hyperpolarizability of benzothiazole salts

Eva Noskovičová 1 Dušan Lorenc 2,1 Alexandra Číbová 1 Dušan Velič 1,2

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Eva Noskovičová ¹ Dušan Lorenc ^2,1 Alexandra Číbová ¹ Dušan Velič ^1,2