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active lens 1fast switching 1holographic lens 1magnetic garnet 1magneto-optical effect 1metasurface 1

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physics.optics2026

Magneto-optical hologram lens with microsecond focal switching in magnetic garnet

Hibiki Miyashita, Toshiaki Watanabe, Eri Negishi +3

The paper demonstrates a magneto‑optical active lens formed on a magnetic garnet film that can reversibly switch its focal state in about 10 µs using magnetic field pulses, focusin…