Investigating the nonlinear optical properties of molten organic materials

Paul A. Fleitz; Richard L. Sutherland

doi:10.1117/12.284165

10 October 1997 Investigating the nonlinear optical properties of molten organic materials

Paul A. Fleitz, Richard L. Sutherland

Proceedings Volume 3146, Nonlinear Optical Liquids and Power Limiters; (1997) https://doi.org/10.1117/12.284165
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

The nonlinear absorption of two substituted thiophene compounds containing benzithiazole units was investigated using the Z-scan technique. The experiments were performed using a Nd:YAG laser frequency doubled to 532nm with 24ps laser pulses. The samples were prepared as solutions in THF and as melts by heating above their melting points into the isotropic liquid phase. Both compounds show strong nonlinear absorption under all conditions. Solutions of these materials show little or no linear absorption at the laser wavelength. However, the melts do show significant linear absorption. The nonlinear absorption observed has been analyzed using methods for two-photon absorption and two-photon assisted excited state absorption and two-photon absorption cross-sections are reported.

Citation Download Citation

Paul A. Fleitz and Richard L. Sutherland "Investigating the nonlinear optical properties of molten organic materials", Proc. SPIE 3146, Nonlinear Optical Liquids and Power Limiters, (10 October 1997); https://doi.org/10.1117/12.284165

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