Solvent effects on the nonlinear optical response of a potentiometric biological imaging dye
JOSA B, Vol. 24, Issue 6, pp. 1310-1318 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001310
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Abstract
To understand the electronic mechanisms for the electric-field sensitive second-harmonic response of di-8-4-(2-[6-(dioctylamino)-2-naphthalenyl]ethneyl)-1-(3-sulfopropyl) pryridinium inner salt in biological membranes, we have measured its nonlinear optical hyperpolarizability using a combination of hyper-Rayleigh scattering and linear optical properties in solvent environments of various polarity. Changes in the first hyperpolarizabilities are discussed by modeling experimental inputs from the solvatochromic effect in linear absorption and appropriate dispersion relations near the two-photon resonance. We find that both frequency-dependent and frequency-independent effects make significant contributions to the response, and the strongest response is on the low-energy side of the two-photon resonance, while the weakest response is on the high-energy side of the two-photon resonance.
© 2007 Optical Society of America
OCIS Codes
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(300.6420) Spectroscopy : Spectroscopy, nonlinear
ToC Category:
Nonlinear Optics
History
Original Manuscript: October 12, 2006
Revised Manuscript: January 29, 2007
Manuscript Accepted: February 21, 2007
Published: May 17, 2007
Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics
Citation
Haowen Li, Guilin Mao, Kenneth D. Singer, Zhikuan Lu, Ryan Weber, and Robert J. Twieg, "Solvent effects on the nonlinear optical response of a potentiometric biological imaging dye," J. Opt. Soc. Am. B 24, 1310-1318 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josab-24-6-1310
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