@article{Kumar2008,
  keywords = {Wavelength, Nonlinear optical properties (NLO), Spectroscopic ellipsometry, Harmonic generation, Bismuth compounds, Antiferromagnetic materials, Refractive index, Nonlinear optical coefficients},
  author = {A Kumar and R.C Rai and N.J Podraza and S Denev and M Ramirez and Y.-H Chu and L.W Martin and J Ihlefeld and T Heeg and J Schubert and D.G Schlom and J Orenstein and Ramamoorthy Ramesh and R.W Collins and J.L Musfeldt and V Gopalan},
  title = {Linear and nonlinear optical properties of BiFeO3},
  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{\textpm}0.01, d31 d22 =0.35{\textpm}0.02, d33 d22 =-11.4{\textpm}0.20, and ∫ d22 ∫ =298.4{\textpm}6.1 pmV at a fundamental wavelength of 800 nm. {\textcopyright} 2008 American Institute of Physics.},
  year = {2008},
  booktitle = {Applied Physics Letters},
  journal = {Applied Physics Letters},
  series = {Applied Physics Letters},
  volume = {92},
  number = {12},
  issn = {00036951},
  doi = {10.1063/1.2901168},
  note = {cited By 185},
  language = {eng},
}