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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 22 — Oct. 27, 2008
  • pp: 18034–18039

Four wave mixing at air-dielectric interfaces with a femtosecond laser excitation

R. Sai Santosh Kumar, Suneel Singh, and D. Narayana Rao  »View Author Affiliations

Optics Express, Vol. 16, Issue 22, pp. 18034-18039 (2008)

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In this article we report our experimental results on non collinear four-wave mixing (FWM) at air-dielectric interfaces. We generated FWM signal from the two interfaces of a 1mm thick fused silica slide with air using two 800 nm, 100 fs pump pulses in non-collinear pump-probe type geometry. We observe that there is a maximum peak shift of ~1.5 nm in FWM signals corresponding to the two interfaces of the same silica slide. Further, we find that the intensity of FWM signal observed at air to silica interface is less than that from silica to air interface. We briefly elaborate on this observation with systematic study of FWM in fused silica.

© 2008 Optical Society of America

OCIS Codes
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.2250) Ultrafast optics : Femtosecond phenomena

ToC Category:
Nonlinear Optics

Original Manuscript: July 8, 2008
Revised Manuscript: August 29, 2008
Manuscript Accepted: October 8, 2008
Published: October 21, 2008

R. Sai Santosh Kumar, Suneel Singh, and D. Narayana Rao, "Four wave mixing at air-dielectric interfaces with a femtosecond laser excitation," Opt. Express 16, 18034-18039 (2008)

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