Circular dichroism in second harmonic generation from oxidized Si (001)

Xiaoqin Li; J. Willits; S.T. Cundiff; I.M.P. Aarts; A.A.E. Stevens; D.S. Dessau

doi:10.1063/1.2220014

Circular dichroism in second harmonic generation from oxidized Si (001)

Xiaoqin Li
, J. Willits
, S.T. Cundiff
, I.M.P. Aarts
, A.A.E. Stevens
, D.S. Dessau

Research output: Contribution to journal › Article › Academic › peer-review

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Abstract

Circular dichroism in second harmonic generation (SHG) is often related to molecules and materials with chiral structures. In this letter, we report circular dichroism in SHG from anisotropic achiral oxidized Si (001) at room temperature. The dichroism value depends on the azimuthal angles of the crystal axes. Due to the simple nonlinear susceptibility elements involved, we were able to attribute the dichroism in SHG to interference between particular terms of the bulk electric quadrupole and surface dipole contributions. The presence of a phase shift between the bulk and surface SHG is required to observe circular dichroism.

Original language	English
Article number	022102
Pages (from-to)	022102-1/3
Number of pages	3
Journal	Applied Physics Letters
Volume	89
Issue number	2
DOIs	https://doi.org/10.1063/1.2220014
Publication status	Published - 2006

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title = "Circular dichroism in second harmonic generation from oxidized Si (001)",

abstract = "Circular dichroism in second harmonic generation (SHG) is often related to molecules and materials with chiral structures. In this letter, we report circular dichroism in SHG from anisotropic achiral oxidized Si (001) at room temperature. The dichroism value depends on the azimuthal angles of the crystal axes. Due to the simple nonlinear susceptibility elements involved, we were able to attribute the dichroism in SHG to interference between particular terms of the bulk electric quadrupole and surface dipole contributions. The presence of a phase shift between the bulk and surface SHG is required to observe circular dichroism.",

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AU - Li, Xiaoqin

AU - Willits, J.

AU - Cundiff, S.T.

AU - Aarts, I.M.P.

AU - Stevens, A.A.E.

AU - Dessau, D.S.

PY - 2006

Y1 - 2006

N2 - Circular dichroism in second harmonic generation (SHG) is often related to molecules and materials with chiral structures. In this letter, we report circular dichroism in SHG from anisotropic achiral oxidized Si (001) at room temperature. The dichroism value depends on the azimuthal angles of the crystal axes. Due to the simple nonlinear susceptibility elements involved, we were able to attribute the dichroism in SHG to interference between particular terms of the bulk electric quadrupole and surface dipole contributions. The presence of a phase shift between the bulk and surface SHG is required to observe circular dichroism.

AB - Circular dichroism in second harmonic generation (SHG) is often related to molecules and materials with chiral structures. In this letter, we report circular dichroism in SHG from anisotropic achiral oxidized Si (001) at room temperature. The dichroism value depends on the azimuthal angles of the crystal axes. Due to the simple nonlinear susceptibility elements involved, we were able to attribute the dichroism in SHG to interference between particular terms of the bulk electric quadrupole and surface dipole contributions. The presence of a phase shift between the bulk and surface SHG is required to observe circular dichroism.

U2 - 10.1063/1.2220014

DO - 10.1063/1.2220014

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Circular dichroism in second harmonic generation from oxidized Si (001)

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