Linear and nonlinear optical properties of BiFeO3

Journal Article

Kumar, A, 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

10.1063/1.2901168

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.

Applied Physics Letters

92

2008

00036951

cited By 185

No Organization

Ramesh Lab