Non-thermal optical excitation of terahertz-spin precession in a magneto-optical insulator

Sergii Parchenko, Takuya Satoh, Isao Yoshimine, Feliks Stobiecki, Andrzej Maziewski, Andrzej Stupakiewicz

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

We demonstrate non-thermal ultrafast laser excitation of spin precession with THz frequency in Gd-Bi-substituted iron garnet via the inverse Faraday effect. The modulation of THz precession by about 60 GHz below the compensation temperature of magnetic moment was observed. The THz frequency precession was caused by the exchange resonance between the Gd and Fe sublattices; we attributed the low-frequency modulation to dielectric resonance mode with a magnetic contribution. We demonstrate the possibility of polarization-sensitive control of spin precession under THz generation by laser pulses, helping to develop high-speed magneto-optical devices.

本文言語英語
論文番号032404
ジャーナルApplied Physics Letters
108
3
DOI
出版ステータス出版済み - 1 18 2016

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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