Linear and Nonlinear Optical constants of BiFeO_3

By Amit Kumar, Ram C. Rai, N. Podraza, S. Denev, M. O. Ramírez, Y. Chu, Lane W. Martin, J. Ihlefeld, T. Heeg, Jürgen Schubert and 6 more. 2008

202 citations recorded by the source corpus.

Using spectroscopic ellipsometry, the refractive index and absorption versus wavelength of the ferroelectric antiferromagnet Bismuth Ferrite, BiFeO_3 is 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 d_15/d_22 = 0.20 +/- 0.01, d_31/d_22 = 0.35 +/- 0.02, d_33/d_22 = -11.4 +/- 0.20 and |d_22| = 298.4 +/- 6.1 pm/V at a fundamental wavelength of 800 nm.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/6588646643a9816c22e76bdd4c35de3236a389d8