Cavity-enhanced Kerr effect for magneto-optic spectroscopy of nanostructures

Author

Qureshi, Naser ; Schmidt, Holger ; Hawkins, Aaron

Author_Institution

Dept. of Electr. Eng., California Univ., Santa Cruz, CA, USA

Volume

1

fYear

2003

fDate

12-14 Aug. 2003

Firstpage

175

Abstract

The magneto-optical Kerr effect (MOKE) is commonly used in time-resolved measurements of magnetization. A technique is presented to amplify this rotation and improve the signal-to-noise ratio in measurements of the very small polarization changes that are needed to measure magnetization reversal in single domain nanomagnets. The largest cavity-induced enhancement to date, a factor of 16.25, was observed. Enhancement of up to three orders of magnitude is possible with optimized structures.

Keywords

Kerr magneto-optical effect; dielectric materials; dielectric thin films; magnetic domains; magnets; nanostructured materials; nickel; silicon compounds; MOKE; Ni-SiO₂; cavity enhanced magneto-optical Kerr effect; magnetization; magneto optic spectroscopy; nanostructures; optimized domain structures; polarization; signal-noise ratio; single domain nanomagnets; Dielectric losses; Kerr effect; Magnetic domains; Magnetization; Magnetooptic effects; Nanostructures; Optical polarization; Optical reflection; Rotation measurement; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2003. IEEE-NANO 2003. 2003 Third IEEE Conference on

Print_ISBN

0-7803-7976-4

Type

conf

DOI

10.1109/NANO.2003.1231744

Filename

1231744