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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 16 — Aug. 3, 2009
  • pp: 13881–13888

Measurement of the dispersion of air and of refractive index anomalies by wavelength-dependent nonlinear interferometry

Roberto Macovez, Marina Mariano, Sergio Di Finizio, and Jordi Martorell  »View Author Affiliations

Optics Express, Vol. 17, Issue 16, pp. 13881-13888 (2009)

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We carry out wavelength-dependent second harmonic interference experiments using thin films of an organic dye as nonlinear optical sources. While the measured difference of refractive index between the fundamental and second harmonic wavelengths follows the theoretical expectation for air in a wide spectral region, anomalous dispersion is observed when the second harmonic light lies in the absorption band of the dye. The sensitivity of the technique to small refractive index variations may prove useful for sensing applications as well as for testing models of light dispersion in weakly dispersing and absorbing media.

© 2009 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(190.2620) Nonlinear optics : Harmonic generation and mixing
(300.6420) Spectroscopy : Spectroscopy, nonlinear

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: June 9, 2009
Revised Manuscript: July 9, 2009
Manuscript Accepted: July 9, 2009
Published: July 27, 2009

Roberto Macovez, Marina Mariano, Sergio Di Finizio, and Jordi Martorell, "Measurement of the dispersion of air and of refractive index anomalies by wavelength-dependent nonlinear interferometry," Opt. Express 17, 13881-13888 (2009)

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