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Updated: Jul 14, 2026

Spectral and Angle-Resolved Magneto-Optical Characterization of Photonic Nanostructures
Published on: November 21, 2019
Measurements of threshold photoemission magnetic dichroism using ultraviolet lasers and a photoelastic modulator
Takeshi Nakagawa1, Toshihiko Yokoyama, Masahito Hosaka
1Department of Molecular Structure, Institute for Molecular Science, Myodaiji-cho, Okazaki 444-8585, Japan. nakagawa@ims.ac.jp
Abstract:
A magneto-optical method based on valence band photoemission by laser excitation is described. Total photoexcited electron dichroism is detected using wave plates or a photoelastic modulator. Compared to the direct current method using wave plates, a modulation technique assisted by a photoelastic modulator has an advantage to improve the signal-to-noise ratio of magnetic dichroism by a factor of 10. The magnetic circular and linear dichroism can be investigated with this technique. An application to magnetic domain imaging using photoemission electron microscope is also demonstrated.

