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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 10 — Apr. 1, 2008
  • pp: 1443–1446

Hyper-Rayleigh scattering with picosecond pulse trains

Paulo L. Franzen, Lino Misoguti, and Sérgio C. Zilio  »View Author Affiliations

Applied Optics, Vol. 47, Issue 10, pp. 1443-1446 (2008)

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We propose a method for measuring hyper-Rayleigh scattering employing pulse trains produced by a Q-switched and mode-locked Nd:YAG laser. The use of the entire pulse train under the Q-switch envelope avoids the need of any device to scan the irradiance, as is usually done with nanosecond and femtosecond single-pulse lasers. To verify the feasibility of the technique, we performed measurements in different solutions of para-nitroaniline and compared the results with those obtained with nanosecond pulses. In both cases, the agreement with the hyperpolarizability values reported in the literature is about the same, but the measurements carried out with pulse trains are at least 20 times faster. Besides the advantage of acquisition speed, the use of pulse trains also allows the instantaneous inspection of slow luminescence contributions arising from multiphoton absorption.

© 2008 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter

ToC Category:
Nonlinear Optics

Original Manuscript: November 29, 2007
Manuscript Accepted: January 29, 2008
Published: March 28, 2008

Paulo L. Franzen, Lino Misoguti, and Sérgio C. Zilio, "Hyper-Rayleigh scattering with picosecond pulse trains," Appl. Opt. 47, 1443-1446 (2008)

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