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Magneto-optical coupling in whispering-gallery-mode resonators

Accepted version
Peer-reviewed

Type

Article

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Authors

Haigh, JA 
Langenfeld, S 
Lambert, NJ 
Baumberg, JJ 
Ramsay, AJ 

Abstract

We demonstrate that yttrium iron garnet microspheres support optical whispering gallery modes similar to those in non-magnetic dielectric materials. The direction of the ferromagnetic moment tunes both the resonant frequency via the Voigt effect as well as the degree of polarization rotation via the Faraday effect. An understanding of the magneto-optical coupling in whispering gallery modes, where the propagation direction rotates with respect to the magnetization, is fundamental to the emerging field of cavity optomagnonics.

Description

Keywords

cond-mat.mes-hall, cond-mat.mes-hall, physics.optics

Journal Title

Physical Review A - Atomic, Molecular, and Optical Physics

Conference Name

Journal ISSN

1050-2947
1094-1622

Volume Title

92

Publisher

American Physical Society (APS)
Sponsorship
Engineering and Physical Sciences Research Council (EP/G060649/1)
Engineering and Physical Sciences Research Council (EP/L027151/1)
European Research Council (320503)
The Royal Society (uf130303)
European Research Council (648613)
Engineering and Physical Sciences Research Council (Grant IDs: EP/M50693X/1, EP/L027151/1), European Research Council (Grant ID: 648613), Hitachi (research fellowship), Royal Society (University Research Fellowship), Winton programme for the Physics of Sustainability