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

doi:10.1103/PhysRevB.69.214109

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 journal › Article › peer-review

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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 language	English (US)
Article number	214109
Pages (from-to)	214109-1-214109-7
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	69
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.69.214109
State	Published - Jun 2004

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.69.214109

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title = "Bismuth manganite: A multiferroic with a large nonlinear optical response",

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.",

author = "Alok Sharan and James Lettieri and Yunfa Jia and Wei Tian and Xiaoqing Pan and Schlom, {Darrell G.} and Venkatraman Gopalan",

year = "2004",

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T2 - A multiferroic with a large nonlinear optical response

AU - Sharan, Alok

AU - Lettieri, James

AU - Jia, Yunfa

AU - Tian, Wei

AU - Pan, Xiaoqing

AU - Schlom, Darrell G.

AU - Gopalan, Venkatraman

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N2 - 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.

AB - 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.

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Bismuth manganite: A multiferroic with a large nonlinear optical response

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