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arXiv · 2404.16182

Optomagnetic forces on YIG/YFeO3 microspheres levitated in chiral hollow-core photonic crystal fibre

Soumya Chakraborty·Gordon K. L. Wong·Ferdi Oda·Vanessa Wachter·Silvia Viola Kusminskiy·Tadahiro Yokosawa·Sabine Hübner·Benjamin Apeleo Zubiri·Erdmann Spiecker·Monica Distaso·Philip St. J. Russell·Nicolas Y. Joly
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Abstract

We explore a magnetooptomechanical system consisting of a single magnetic microparticle optically levitated within the core of a helically twisted single-ring hollow-core photonic crystal fibre. We use newly-developed magnetic particles that have a core of antiferromagnetic yttrium-ortho-ferrite (YFeO3) and a shell of ferrimagnetic YIG (Y3Fe5O12) approximately 50 nm thick. Using a 632.8 nm probe beam, we observe optical-torque-induced rotation of the particle and rotation of the magnetization vector in presence of an external static magnetic field. This one-of-a-kind platform opens a path to novel investigations of optomagnetic physics with levitated magnetic particles.

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Soumya Chakraborty, Gordon K. L. Wong, Ferdi Oda, Vanessa Wachter, Silvia Viola Kusminskiy, Tadahiro Yokosawa, Sabine Hübner, Benjamin Apeleo Zubiri, Erdmann Spiecker, Monica Distaso, Philip St. J. Russell, Nicolas Y. Joly. 2024-04-24. Optomagnetic forces on YIG/YFeO3 microspheres levitated in chiral hollow-core photonic crystal fibre. https://arxiv.org/abs/2404.16182

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