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Proceedings Paper

Role of two-photon states in nonlinear optical dye chromophores
Author(s): Yizhong Yu; Rui-Fang Shi; M. H. Wu; C. H. Grossman; Anthony F. Garito
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Paper Abstract

The critical role of two-photon (pi) -electron excited states in third order optical processes in squaraine dyes is described. The discussion is based on recently completed femtosecond measurements of the excited state absorption spectrum of a typical centrosymmetric squaraine. The new experimental data agree well with the earlier theoretical description and quantum many-electron calculations reported for the dye chromophores.

Paper Details

Date Published: 15 May 1994
PDF: 7 pages
Proc. SPIE 2143, Organic, Metallo-Organic, and Polymeric Materials for Nonlinear Optical Applications, (15 May 1994); doi: 10.1117/12.173813
Show Author Affiliations
Yizhong Yu, Temple Univ. and Univ. of Pennsylvania (United States)
Rui-Fang Shi, Univ. of Pennsylvania (United States)
M. H. Wu, Univ. of Pennsylvania (United States)
C. H. Grossman, Swarthmore College (United States)
Anthony F. Garito, Univ. of Pennsylvania (United States)

Published in SPIE Proceedings Vol. 2143:
Organic, Metallo-Organic, and Polymeric Materials for Nonlinear Optical Applications
Seth R. Marder; Joseph W. Perry, Editor(s)

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