Third-order hyperpolarizabilities of soluble organometallic compounds

Maria Angeles Diaz-Garcia; Fernando Agullo-Lopez; M. G. Hutchings; P. F. Gordon; Francois Kajzar

doi:10.1117/12.187518

23 September 1994 Third-order hyperpolarizabilities of soluble organometallic compounds

Maria Angeles Diaz-Garcia, Fernando Agullo-Lopez, M. G. Hutchings, P. F. Gordon, Francois Kajzar

Proceedings Volume 2285, Nonlinear Optical Properties of Organic Materials VII; (1994) https://doi.org/10.1117/12.187518
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

The molecular hyperpolarizabilities (gamma) of several soluble organometallic compounds have been determined by third-harmonic generation in solution at 1.064 and 1.907 micrometers fundamental wavelengths. Both, the real and imaginary parts of (gamma) have been determined from the concentration dependence of the harmonic intensity. Values between 10^-33 and 10^-32 esu have been found, depending on excitation wavelength and metal substitution. Results have been discussed with reference to those recently measured by us for metal-free (H₂Pc) and copper (CuPc) phthalocyanines. Quantitative analysis have been carried out, based on four-level model expressions for the dispersion of (gamma) . Experimental values have been described in terms of two excited one-photon allowed levels (corresponding to transitions associated with bands observed in the linear optical spectrum at around 0.3 and 0.9 micrometers ) and a one-photon forbidden (two photon allowed) level placed between both transitions.

Citation Download Citation

Maria Angeles Diaz-Garcia, Fernando Agullo-Lopez, M. G. Hutchings, P. F. Gordon, and Francois Kajzar "Third-order hyperpolarizabilities of soluble organometallic compounds", Proc. SPIE 2285, Nonlinear Optical Properties of Organic Materials VII, (23 September 1994); https://doi.org/10.1117/12.187518

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