Optimal mode matching in cavity optomagnonics

Sanchar Sharma, Babak Zare Rameshti, Yaroslav M. Blanter, and Gerrit E. W. Bauer
Phys. Rev. B 99, 214423 – Published 17 June 2019

Abstract

Inelastic scattering of photons is a promising technique to manipulate magnons but it suffers from weak intrinsic coupling. We theoretically discuss an idea to increase optomagnonic coupling in optical whispering gallery mode cavities by generalizing a previous analysis to include the exchange interaction. We predict that the optomagnonic coupling constant to surface magnons in yttrium iron garnet (YIG) spheres with radius 300μm can be up to 40 times larger than that to the macrospin Kittel mode. Whereas this enhancement falls short of the requirements for magnon manipulation in pure YIG, nanostructuring and/or materials with larger magneto-optical constants can bridge this gap.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 6 March 2019
  • Revised 16 May 2019

DOI:https://doi.org/10.1103/PhysRevB.99.214423

©2019 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Sanchar Sharma1, Babak Zare Rameshti2, Yaroslav M. Blanter1, and Gerrit E. W. Bauer3,1

  • 1Kavli Institute of NanoScience, Delft University of Technology, 2628 CJ Delft, The Netherlands
  • 2Department of Physics, Iran University of Science and Technology, Narmak, Tehran 16844, Iran
  • 3Institute for Materials Research & WPI-AIMR & CSRN, Tohoku University, Sendai 980-8577, Japan

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 99, Iss. 21 — 1 June 2019

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×