Linear and nonlinear optical properties of BiFeO3

Publication Type:

Journal Article

Authors:

A. Kumar; R.C. Rai; N.J. Podraza; S. Denev; M. Ramirez; Y.-H. Chu; L.W. Martin; J. Ihlefeld; T. Heeg; J. Schubert; D.G. Schlom; J. Orenstein; Ramamoorthy Ramesh; R.W. Collins; J.L. Musfeldt; V. Gopalan

Source:

Applied Physics Letters, Volume 92, Number 12 (2008)

Keywords:

Antiferromagnetic materials, bismuth compounds, harmonic generation, Nonlinear optical coefficients, nonlinear optical properties, Refractive index, spectroscopic ellipsometry, wavelength

Abstract:

Using spectroscopic ellipsometry, the room temperature refractive index and absorption versus wavelength of the ferroelectric antiferromagnet bismuth ferrite, BiFe O3, are reported. The material has a direct band gap at 442 nm wavelength (2.81 eV). Using optical second harmonic generation, the nonlinear optical coefficients were determined to be d15 d22 =0.20±0.01, d31 d22 =0.35±0.02, d33 d22 =-11.4±0.20, and ∫ d22 ∫ =298.4±6.1 pmV at a fundamental wavelength of 800 nm. © 2008 American Institute of Physics.

Notes:

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