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Odd Magneto-Optical Linear Dichroism in a Magnetophotonic Crystal

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Version 2 2023-10-12, 16:00
Version 1 2023-01-10, 03:32
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posted on 2023-10-12, 16:00 authored by Tatiana Mikhailova, Daria Ignatyeva, Sergey Lyashko, Vladimir Berzhansky, Vladimir Belotelov
The phenomena of magneto-optical polarization rotation and circular magnetic dichroism are well known in the Faraday configuration. We present another effect, an odd magneto-optical linear dichroism, arising in nanostructures with polarization-dependent mode Q-factors. It reveals itself as the magneto-optical modulation of light intensity for the two opposite magnetization directions in the Faraday configuration. The effect was demonstrated on a magnetophotonic crystal with a cavity mode, the polarization-dependent Q-factor of which is due to oblique incidence. For a polarization angle of 60{\deg} (or 120{\deg}) and an angle of incidence around 60{\deg}, the magneto-optical intensity modulation maximizes and reaches 6%.

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