Bismuth manganite: A multiferroic with a large nonlinear optical response

Alok Sharan, James Lettieri, Yunfa Jia, Wei Tian, Xiaoqing Pan, Darrell G. Schlom, Venkatraman Gopalan

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

We report evidence for ferroelectricity in bismuth manganite epitaxial films from optical second-harmonic generation (SHG). The change in the polar symmetry of SHG signals under external electric fields is correlated to specific changes in the ferroelectric domain microstructures. We also observe giant enhancement of SHG by 3 to 4 orders of magnitude with effective d f∼193 pm/V under electric fields of ∼707 V/mm. The material also exhibits a large third-order nonlinear optical response with nonlinear absorption coefficient α1∼ -0.08 cm/kW and nonlinear refractive index n1∼-0.53×10-9 cm2/W.

Original languageEnglish (US)
Article number214109
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume69
Issue number21
DOIs
StatePublished - Jun 1 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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