Nonlinear Optical Properties of Polythiophene and Iodine Doped Thin Films by Aerosol Assisted Plasma Jet Polymerization at Atmospheric Pressure
Keywords:
Polythiophene iodine, doping, thin films, nonlinear optical properties.Abstract
In this work, the nonlinear optical properties of pure Polythiophene and in situ iodine doping Polythiophene thin films on glass substrate, prepared by aerosol assisted plasma jet polymerization at atmospheric pressure, thin films were studied through open and closed Z-scan technique under laser excitation at 532 nm, CW solid state laser with an output power of 100 mW. The nonlinear optical properties of pure Polythiophene thin films prepped at different gas flow rate and Polythiophene thin films iodine doped at constant gas flow rate 1lm-1 and different iodine weight concentration 1, 3, 5, and 7%were studied. the closed aperture Z-scan data indicates that the sign of the refraction nonlinearity is negative for thin films prepared at gas flow rate 1lm-1, 2lm-1 n2 0.938×10-5 and 1.247×10-5 cm2/mw .and positive nonlinearity for thin films prepared at other gas flow rate, n2 1.409×10-5 and 1.547×10-5 cm2/mw for gas flow rate 3 and 4 lm-1 respectively. And the open Z-scan measurements show two photon absorption ? cm/mW, 2.797cm/mW for gas flow rate 4lm-1 show saturated absorption ? cm/mW, 0.993, 1.25 and 0.3 cm/mW for all gas flow rate1, 2 and 3 lm-1 respectively. For Polythiophene thin films iodine doped at constant gas flow rate the closed aperture Z-scan measurements shows positive nonlinearity for thin films prepared at iodine concentration 1,3 and 7% n2 2.510×10-5, 2.101×10-5and 1.638×10-5 cm2/mw respectively.
While thin films prepared with iodine concentration 5% shows negative nonlinearity n2 2.343×10-5 cm2/mW respectively. The open aperture Z-scan measurements for Polythiophene thin films doped with iodine by different concentration 1, 3, 5, and 7% and constant gas flow rate show saturated absorption ? cm/mW, 2.140 and 2.001 cm/mW at iodine concentration 5 and 7% for all for all gas flow rate show two photon absorption ? cm/mW, 1.763 and 2.037 cm/mW. It can be concluding that, the possibility of obtaining direct and inexpensive method to prepare saturated absorption thin films material, by aerosol assisted plasma jet polymerization at atmospheric pressure.
References
. Van Stryland, E.W., Vanherzeele, H., Woodall, M.A., Soileau, M.J., Smirl, A.L., Guha, S.and Bogess, T.F., Opt. Eng., 24, 613 (1985).
. Mendonca, C.R., Correa, D.S., Baldacchini, T., Tayalia, P., and Mazur, E., submitted to J. Appl. Phys.
. Mizrahi, M., DeLong, K., Stegeman, G., Saifi, M. and Andrejco, M., Appl. Phys. Lett., 55, 1823 (1989).
. Sheik-Bahae, M., Said, A.A., Wei, T., Hagan, D.J., Van Stryland, E.W., IEEE. J. QuantumElectron., 26, 760 (1990)
. Xia, T., Sheik-Bahae, M., Said, A. A., Hagan, D.J., Van Stryland, E.W., Int. J. Nonlinear Opt.Phys., 3, 489 (1994).
. Balu, M., Hales, J., Hagan, D.J., Van Stryland, E.W., Opt. Express, 12, 3820 (2004).
. Imangholi B, Hasselbeck M.P., Sheik-Bahae M., Opt. Commun., 227, 337, (2003).
. Hammad R. HumudȦ, Thikra Kh. ObayesȦ and Qusay A. AbbasȦ International Journal of Current Engineering and Technology, 4, 2580(2014)
. R. de Nalda, R. del Coso, J. Requejo-Isidro, J. Olivares, A. Suarez-Garcia, J. Solis and C. N. Afonso, Nalda et al.Vol, 19, No. 2, (2002).
. S.L. G´omez, F.L.S. Cuppo, and A.M. Figueiredo Neto, Brazilian Journal of Physics, Vol.33, No. 4, (2003).
. C.S. Winter, R.J. Manning, S.N. Oliver and C.A.S Hill, Optics Communications, Vol. 90, (1992), p.139.
. M. Sheik-Bahae, A. A. Said, T. Wel, D. J. Hagan and E. W. Van, IEEE Journal of Quantum Electronic,Vol 26, NO. 4.(1990),p 760.
. J.F. Ready, “Industrial Application of Lasers”, 2nd, Academic Press, San Diego, (1978).
. M.Sheik, A. Ali, J.David “Sensitive Measurement of Optical Nonlinearities Using aSingle Beam” IEEE Journal of Quantum electronics Vol, 26 No 4. (1990), p 760.
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