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Proceedings Paper

Excited-state absorption optical limiting of a novel organic polymer
Author(s): Yinglin Song; Feng Li; Xinxian Bao; Xuedong Yang; Ruibo Wang; Chunfei Li
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Paper Abstract

The optical limiting response and excited-state absorption properties of a novel organic polymer (poly(5-2-methythio-4- methyl-5-pyrimidinyl)-2,4-pentadine-1-ol)-p-toluene sulfinate) in chloroform solvent have been investigated and its solutions almost have no absorption in visible spectral range. A Nd:YAG laser source with 8-ns/21-ps pulse width and 532-nm wavelength was employed. The pulse-width-dependent measurements indicated that the optical limiting mechanism is excited state absorption along with nonresonant two photon absorption. The open aperture Z-scan was also performed to measure the molecular excited state absorption coefficient. The nanosecond optical limiting behavior of the various concentration solution samples with nominal transmissions of 87%, 56% and 26% have been measured as a function of the beam fluence. The theoretical fitting result of excited state cross section can be fitted on the mode that excited-state absorption is the predominant mechanism causing the observed optical limiting behavior.

Paper Details

Date Published: 1 November 1996
PDF: 6 pages
Proc. SPIE 2852, Nonlinear Optical Properties of Organic Materials IX, (1 November 1996); doi: 10.1117/12.256177
Show Author Affiliations
Yinglin Song, Harbin Institute of Technology (China)
Feng Li, Harbin Institute of Technology (China)
Xinxian Bao, Harbin Institute of Technology (China)
Xuedong Yang, Harbin Institute of Technology (China)
Ruibo Wang, Harbin Institute of Technology (China)
Chunfei Li, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 2852:
Nonlinear Optical Properties of Organic Materials IX
Gustaaf R. Moehlmann, Editor(s)

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