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  • Vol. 21, Iss. 21 — Nov. 1, 1996
  • pp: 1774–1776

Spectral content and dispersion of hyper-Rayleigh scattering

S. F. Hubbard, R. G. Petschek, and K. D. Singer  »View Author Affiliations


Optics Letters, Vol. 21, Issue 21, pp. 1774-1776 (1996)
http://dx.doi.org/10.1364/OL.21.001774


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Abstract

We have used a high-intensity tunable picosecond infrared laser source to measure the spectral content of light scattered near the second harmonic for two well-known organic dyes, p-Nitroaniline and Disperse Red 1, at a number of wavelengths in the near infrared. We found that in Disperse red 1 a broad two-photon fluorescence competes with the sharp hyper-Rayleigh peak. Further, dephasing of the virtual excited state leads to elimination of hyper-Rayleigh scattering in favor of fluorescence if the harmonic is in the linear absorption tail. We determined the dispersion of the magnitude of the first hyperpolarizability for both dyes, using a simple referencing technique, and found it to be consistent with that of a two-level dispersion model.

© 1996 Optical Society of America

History
Original Manuscript: July 11, 1996
Published: November 1, 1996

Citation
S. F. Hubbard, R. G. Petschek, and K. D. Singer, "Spectral content and dispersion of hyper-Rayleigh scattering," Opt. Lett. 21, 1774-1776 (1996)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-21-21-1774


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