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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 10970–10975

Femtosecond third-order optical nonlinearity of polycrystalline BiFeO3

Bing Gu, Yang Wang, John Wang, and Wei Ji  »View Author Affiliations


Optics Express, Vol. 17, Issue 13, pp. 10970-10975 (2009)
http://dx.doi.org/10.1364/OE.17.010970


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Abstract

We report both linear and nonlinear optical properties of a ferroelectric thin film of polycrystalline BiFeO3 deposited on a quartz substrate. The linear refraction index and absorption coefficient of the film are determined as a function of light wavelength by optical transmittance measurements. By performing Z-scan experiments with femtosecond laser pulses at a wavelength of 780 nm, the third-order nonlinear refraction index and two-photon absorption (2PA) coefficient are measured to be 1.5×10-4 cm2/GW and 16 cm/GW, respectively. The results indicate that the thin film of polycrystalline BiFeO3 is a promising candidate for applications in nonlinear photonic devices.

© 2009 Optical Society of America

OCIS Codes
(160.2260) Materials : Ferroelectrics
(190.3270) Nonlinear optics : Kerr effect
(190.4180) Nonlinear optics : Multiphoton processes

ToC Category:
Nonlinear Optics

History
Original Manuscript: May 7, 2009
Revised Manuscript: June 2, 2009
Manuscript Accepted: June 2, 2009
Published: June 16, 2009

Citation
Bing Gu, Yang Wang, John Wang, and Wei Ji, "Femtosecond third-order optical nonlinearity of BiFeO3," Opt. Express 17, 10970-10975 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-13-10970


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