Third harmonic generation of laser radiation in Fe- and Zn-doped polyvinylpyrrolidone |
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| Authors: | R.A. Ganeev A.I. Ryasnyansky M.K. Kodirov S.R. Kamalov V.A. Li R.I. Tugushev T. Usmanov |
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| Affiliation: | (1) NPO Akadempribor, Akademgorodok, Tashkent 700143, Uzbekistan, UZ;(2) Samarkand State University, Samarkand 703004, Uzbekistan, UZ;(3) Institute of Chemistry and Physics of Polymers, Tashkent 700128, Uzbekistan, UZ |
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| Abstract: | The results of third-order nonlinear susceptibilities studies of Fe- and Zn-doped polyvinylpyrrolidone (PVP) aqueous solution in processes of third harmonic generation of Nd:YAG laser radiation are presented. Nonlinear susceptibilities of PVP:Fe and PVP:Zn were calculated to be 5×10-13 esu and 3×10-13 esu respectively. Third harmonic conversion efficiencies in these metallocomplexes were measured to be 8×10-7 and 5×10-7 respectively. The Z-scan method was applied to determine Kerr effect influence on frequency conversion process. The value of nonlinear refractive index of PVP:Fe at the wavelength of λ = 1064 nm was measured to be n 2 = - 6.7×10-13 esu. Received 30 November 2001 / Received in final form 27 March 2002 Published online 28 June 2002 |
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| Keywords: | PACS. 42.65.Ky Harmonic generation, frequency conversion – 42.65.An Optical susceptibility, hyperpolarizability – 78.20.Ci Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity) |
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