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Proceedings Paper

Investigating the nonlinear optical properties of molten organic materials
Author(s): Paul A. Fleitz; Richard L. Sutherland
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Paper 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.

Paper Details

Date Published: 10 October 1997
PDF: 7 pages
Proc. SPIE 3146, Nonlinear Optical Liquids and Power Limiters, (10 October 1997); doi: 10.1117/12.284165
Show Author Affiliations
Paul A. Fleitz, Air Force Wright Lab. (United States)
Richard L. Sutherland, Air Force Wright Lab. (United States)

Published in SPIE Proceedings Vol. 3146:
Nonlinear Optical Liquids and Power Limiters
Christopher M. Lawson, Editor(s)

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