Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 80, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3183496
Keywords
electron spin polarisation; Kerr magneto-optical effect; laser beams; lenses; magnetic domains; magnetisation; photoelasticity
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Funding
- Research Grants Council of the Hong Kong SAR Government [HKUST604306]
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We report that a far field magneto-optical system designed for detecting the off-plane magnetization in polar configuration can also detect the in-plane magnetization, while preserving the high sensitivity by using symmetric illumination and photoelastic modulation, even though the optical axis of the system is vertical to the sample surface. The spatial resolution can reach 500 nm at 514 nm in wavelength. The in-plane sensitivity can be eliminated by using an aperture to remove the off-axis obliquely incident light generated by the high numerical aperture objective lens that focuses the laser beam onto the sample surface.
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