Magneto‐Optical Bi:YIG Films with High Figure of Merit for Nonreciprocal Photonics
Source abstract
Abstract
Abstract Thin film magneto‐optical (MO) materials are enablers for integrated nonreciprocal photonic devices such as isolators and circulators. Films of polycrystalline bismuth‐substituted yttrium iron garnet (Bi:YIG) have been grown on silicon substrates and waveguide devices, in which an yttrium iron garnet (YIG) seedlayer is placed either above or below the active Bi:YIG layer to promote crystallization. The films exhibit a high MO figure of merit of up to 769° dB−1 at 1550 nm wavelength. Growth of single phase Bi:YIG on the sidewalls of waveguides is demonstrated, which can be used in nonreciprocal transverse electric (TE)‐mode devices.
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Research context
OpenAlex topics: Magneto-Optical Properties and Applications · Photonic Crystals and Applications · Photonic and Optical Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA
Institute of Physics Faculty of Mathematics and Physics Charles University Ke Karlovu 3 12116 Prague 2 Czech Republic
Engineering Research Center of Electromagnetic Radiation Control Materials University of Electronic Science and Technology of China Chengdu 610054 China
Funding
National Science Foundation
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