Unidirectional control of optically induced spin waves

I. Yoshimine, Y. Y. Tanaka, T. Shimura, T. Satoh

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Unidirectional control of optically induced spin waves in a rare-earth iron garnet crystal is demonstrated. We observed the interference of two spin-wave packets with different initial phases generated by circularly polarized light pulses. This interference results in unidirectional propagation if the spin-wave sources are spaced apart at 1/4 of the wavelength of the spin waves and the initial phase difference is set to π/2. The propagating direction of the spin wave is switched by the polarization helicity of the light pulses. Moreover, in a numerical simulation, applying more than two spin-wave sources with a suitable polarization and spot shape, arbitrary manipulation of the spin wave by the phased array method was replicated.

Original languageEnglish
Article number67001
JournalEPL
Volume117
Issue number6
DOIs
Publication statusPublished - Mar 2017

Fingerprint

magnons
interference
phased arrays
polarization
pulses
wave packets
garnets
polarized light
manipulators
rare earth elements
iron
propagation
wavelengths
crystals
simulation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Yoshimine, I., Tanaka, Y. Y., Shimura, T., & Satoh, T. (2017). Unidirectional control of optically induced spin waves. EPL, 117(6), [67001]. https://doi.org/10.1209/0295-5075/117/67001

Unidirectional control of optically induced spin waves. / Yoshimine, I.; Tanaka, Y. Y.; Shimura, T.; Satoh, T.

In: EPL, Vol. 117, No. 6, 67001, 03.2017.

Research output: Contribution to journalArticle

Yoshimine, I, Tanaka, YY, Shimura, T & Satoh, T 2017, 'Unidirectional control of optically induced spin waves', EPL, vol. 117, no. 6, 67001. https://doi.org/10.1209/0295-5075/117/67001
Yoshimine I, Tanaka YY, Shimura T, Satoh T. Unidirectional control of optically induced spin waves. EPL. 2017 Mar;117(6). 67001. https://doi.org/10.1209/0295-5075/117/67001
Yoshimine, I. ; Tanaka, Y. Y. ; Shimura, T. ; Satoh, T. / Unidirectional control of optically induced spin waves. In: EPL. 2017 ; Vol. 117, No. 6.
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