Issue |
EPL
Volume 117, Number 6, March 2017
|
|
---|---|---|
Article Number | 67001 | |
Number of page(s) | 5 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/117/67001 | |
Published online | 12 May 2017 |
Unidirectional control of optically induced spin waves
1 Institute of Industrial Science, The University of Tokyo - Tokyo 153-8505, Japan
2 RIKEN Center for Advanced Photonics - Sendai 980-0845, Japan
3 Department of Physics, Kyushu University - Fukuoka 819-0395, Japan
Received: 27 February 2017
Accepted: 20 April 2017
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 . 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.
PACS: 75.30.Ds – Spin waves / 85.70.Sq – Magnetooptical devices / 42.25.Ja – Polarization
© EPLA, 2017
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.