Optimal mode matching in cavity optomagnonics

Sanchar Sharma; Babak Zare Rameshti; Yaroslav M. Blanter; Gerrit E.W. Bauer

doi:10.1103/PhysRevB.99.214423

Optimal mode matching in cavity optomagnonics

Sanchar Sharma, Babak Zare Rameshti, Yaroslav M. Blanter, Gerrit E.W. Bauer

Advanced Institute for Materials Research (AIMR)

Research output: Contribution to journal › Article › peer-review

33 Citations (Scopus)

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.

Original language	English
Article number	214423
Journal	Physical Review B
Volume	99
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.99.214423
Publication status	Published - 2019 Jun 17

Access to Document

10.1103/PhysRevB.99.214423

Cite this

@article{767cbfb2592b48289231011dd8076d1e,

title = "Optimal mode matching in cavity optomagnonics",

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.",

author = "Sanchar Sharma and Rameshti, {Babak Zare} and Blanter, {Yaroslav M.} and Bauer, {Gerrit E.W.}",

note = "Funding Information: We thank T. Yu, S. Streib, M. Elyasi, and K. Sato for helpful input and discussions. This work is financially supported by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) as well as a Grant-in-Aid for Scientific Research (Grants No. 26103006 and No. 19H006450) of the Japan Society for the Promotion of Science (JSPS). B.Z.R. thanks Iran's National Elites Foundation for their support. Publisher Copyright: {\textcopyright}2019 American Physical Society.",

year = "2019",

month = jun,

day = "17",

doi = "10.1103/PhysRevB.99.214423",

language = "English",

volume = "99",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "21",

}

TY - JOUR

T1 - Optimal mode matching in cavity optomagnonics

AU - Sharma, Sanchar

AU - Rameshti, Babak Zare

AU - Blanter, Yaroslav M.

AU - Bauer, Gerrit E.W.

N1 - Funding Information: We thank T. Yu, S. Streib, M. Elyasi, and K. Sato for helpful input and discussions. This work is financially supported by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) as well as a Grant-in-Aid for Scientific Research (Grants No. 26103006 and No. 19H006450) of the Japan Society for the Promotion of Science (JSPS). B.Z.R. thanks Iran's National Elites Foundation for their support. Publisher Copyright: ©2019 American Physical Society.

PY - 2019/6/17

Y1 - 2019/6/17

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85068610952&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85068610952&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.99.214423

DO - 10.1103/PhysRevB.99.214423

M3 - Article

AN - SCOPUS:85068610952

SN - 2469-9950

VL - 99

JO - Physical Review B

JF - Physical Review B

IS - 21

M1 - 214423

ER -

Optimal mode matching in cavity optomagnonics

Abstract

Access to Document

Other files and links

Fingerprint

Cite this