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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 12 — Dec. 1, 2012
  • pp: 1822–1827

Nonlinear refraction in semitransparent pyrolytic carbon films

Tommi Kaplas, Lasse Karvonen, John Rönn, Muhammad Rizwan Saleem, Sami Kujala, Seppo Honkanen, and Yuri Svirko  »View Author Affiliations

Optical Materials Express, Vol. 2, Issue 12, pp. 1822-1827 (2012)

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We report on Z–scan measurements of the nonlinear refractive index of semitransparent pyrolytic carbon films. The nonlinear refractive index of the film is as high as 8.23 × 10−9 cm2/W and shows a non–monotonous dependence on the film thickness. We demonstrate that, although the linear absorption coefficient of the pyrolytic carbon films is comparable to that of crystalline graphite, the nonlinear absorption coefficient of the films is much lower than that of graphene.

© 2012 OSA

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(310.6860) Thin films : Thin films, optical properties

ToC Category:
Nonlinear Optical Materials

Original Manuscript: October 10, 2012
Revised Manuscript: November 1, 2012
Manuscript Accepted: November 5, 2012
Published: November 27, 2012

Tommi Kaplas, Lasse Karvonen, John Rönn, Muhammad Rizwan Saleem, Sami Kujala, Seppo Honkanen, and Yuri Svirko, "Nonlinear refraction in semitransparent pyrolytic carbon films," Opt. Mater. Express 2, 1822-1827 (2012)

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