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Proceedings Paper

Photophysics and nonlinear optical behavior of a,w dithienyl polyenes
Author(s): Lalgudi V. Natarajan; Richard L. Sutherland; Paul A. Fleitz; Laura A. Sowards; Charles W. Spangler
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Paper Abstract

The absorption and emission spectroscopy and nonlinear optical absorption of a series of a,o-dithienyl polyenes were studied in chloroform and n-octane solutions. Dithienyl polyenes containing butyl substituents were also studied. Steady state fluorescence, time resolved emission, fluorescence lifetime and quantum yield measurements were made. The fluorescence quantum yields were significantly lower than those of the corresponding a,w-diphenyl polyenes. Among the dithienyl polyenes, 3,3'-substituted polyenes exhibited stronger fluorescence than those of the 2,2'-substituted. Nonlinear optical absorption experiments showed evidence of two photon absorption. In some polyenes, two photon absorption was followed by excited state absorption.

Paper Details

Date Published: 10 October 1997
PDF: 12 pages
Proc. SPIE 3146, Nonlinear Optical Liquids and Power Limiters, (10 October 1997); doi: 10.1117/12.284166
Show Author Affiliations
Lalgudi V. Natarajan, Air Force Wright Lab and Science Applications International Corp. (United States)
Richard L. Sutherland, Air Force Wright Lab and Science Applications International Corp. (United States)
Paul A. Fleitz, Air Force Wright Lab and Science Applications International Corp. (United States)
Laura A. Sowards, Air Force Wright Lab and Wright State Univ. (United States)
Charles W. Spangler, Air Force Wright Lab and Montana State Univ./Bozeman (United States)


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

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