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Large Nonlinear Kerr Angle in non-Centrosymmetric Fe/AlGaAs (001) Heterostructure

Published online by Cambridge University Press:  01 February 2011

Haibin Zhao ,
Diyar Talbayev ,
Gunter Luepke ,
Aubrey Hanbicki ,
Connie Li  and
Berend Jonker
Haibin Zhao
Affiliation:
[email protected], The College of William and Mary, Williamsburg, VA, 23187, United States
Diyar Talbayev
Affiliation:
[email protected], The College of William and Mary, Williamsburg, VA, 23187, United States
Gunter Luepke
Affiliation:
[email protected], The College of William and Mary, Williamsburg, VA, 23187, United States
Aubrey Hanbicki
Affiliation:
[email protected], Naval Research Laboratory, Washington, DC, 20375, United States
Connie Li
Affiliation:
[email protected], Naval Research Laboratory, Washington, DC, 20375, United States
Berend Jonker
Affiliation:
[email protected], Naval Research Laboratory, Washington, DC, 20375, United States
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Abstract

A large nonlinear magneto-optical effect is observed in a non-centrosymmetric Fe/AlGaAs (001) heterostructure. This effect is a direct consequence of interference between second-harmonic optical waves of magnetic and crystallographic origin, generated at ferromagnetic Fe interface and bulk AlGaAs, respectively. The longitudinal nonlinear Kerr rotation is measured to be 1.6° along the [1-10] hard axis, about two orders of magnitude stronger than the linear equivalent. The rotational second-harmonic signal shows large magnetic contrast along all the in-plane directions, demonstrating a high sensitivity to the magnetization of an anisotropic interface in the longitudinal geometry.

Keywords

magnetoopticferromagneticlaser
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 941: Symposium Q – Magnetic Thin Films, Heterostructures, and Device Materials , 2006 , 0941-Q02-07
Copyright
Copyright © Materials Research Society 2006

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