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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 12 — Dec. 18, 2006

Two-photon absorption in two-dimensional conjugated quadrupolar chromophores

Aaron D. Slepkov, Frank A. Hegmann, Rik R. Tykwinski, Kenji Kamada, Koji Ohta, Jeremiah A. Marsden, Eric L. Spitler, Jeremie J. Miller, and Michael M. Haley  »View Author Affiliations


Optics Letters, Vol. 31, Issue 22, pp. 3315-3317 (2006)
http://dx.doi.org/10.1364/OL.31.003315


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Abstract

We present ultrafast z-scan measurements of the two-photon absorption (TPA) spectra of a pair of two-dimensionally conjugated quadrupolar donor/acceptor (D/A) chromophores. The all-donor substituted species displays a peak TPA cross section [ σ ( 2 ) = 520 ± 30 GM ] that is more than twice that of the D–A species [ σ ( 2 ) = 240 ± 20 GM ] . Unlike previous structure–property studies that have evaluated TPA behavior for D/A molecules through the comparison of dipolar and quadrupolar compounds, both molecules investigated herein are quadrupolar, ultimately providing a more consistent evaluation of the effects of donor and/or acceptor substitution on the TPA of conjugated chromophores.

© 2006 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(190.4180) Nonlinear optics : Multiphoton processes
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(300.6410) Spectroscopy : Spectroscopy, multiphoton

ToC Category:
Nonlinear Optics

History
Original Manuscript: July 7, 2006
Revised Manuscript: August 24, 2006
Manuscript Accepted: August 29, 2006
Published: October 26, 2006

Virtual Issues
Vol. 1, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Aaron D. Slepkov, Frank A. Hegmann, Rik R. Tykwinski, Kenji Kamada, Koji Ohta, Jeremiah A. Marsden, Eric L. Spitler, Jeremie J. Miller, and Michael M. Haley, "Two-photon absorption in two-dimensional conjugated quadrupolar chromophores," Opt. Lett. 31, 3315-3317 (2006)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-31-22-3315

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