Phase-resolving spin-wave microscopy using infrared strobe light
Rapid developments in film-based hybrid magnonic systems call for probing magnetization dynamics at smaller scales, with both amplitude and phase information. Here the stroboscopic technique is promising, but popular spectroscopic wavelengths in or near the UV-visible range face challenges in coherent modulation at the same target frequency (often gigahertz). The authors demonstrate that an IR-wavelength (1550 nm) strobe can be used for spatial imaging of spin waves, by exploiting the Faraday and magneto-optical Kerr effects. Their setup probes a spin wave's wavefront and intensity simultaneously, while being compact enough for a tabletop system with optical-fiber components.
Authors
- James F. Cahoon (ORCID: https://orcid.org/0000-0003-1780-215X)
- V. Novosad (ORCID: https://orcid.org/0000-0003-2127-2374)
- Jia‐Mian Hu (ORCID: https://orcid.org/0000-0002-7579-6440)
- Muntasir Mahdi (ORCID: https://orcid.org/0000-0002-2251-9482)
- F. Tsui (ORCID: https://orcid.org/0000-0002-8769-5540)
- Michael C. Hamilton (ORCID: https://orcid.org/0000-0002-8635-6790)
- Yuzan Xiong (ORCID: https://orcid.org/0009-0005-6151-1300)
- Robert D. Geil
- Rui Sun (ORCID: https://orcid.org/0009-0007-8414-6427)
- Wei Zhang (ORCID: https://orcid.org/0000-0002-5878-3090)
- Dali Sun (ORCID: https://orcid.org/0000-0003-4662-3265)
- Yi Li
- Tae Hee Kim (ORCID: https://orcid.org/0000-0002-3588-0146)
- Binbin Yang (ORCID: https://orcid.org/0000-0001-7755-6072)
- Andrew Christy (ORCID: https://orcid.org/0000-0001-8574-2510)
Institutions
- University of North Carolina at Chapel Hill (US)
- Argonne National Laboratory (US)
- University of Wisconsin–Madison (US)
- North Carolina State University (US)
- North Carolina Agricultural and Technical State University (US)
- Ewha Womans University Medical Center (KR)
- Auburn University (US)
Publication Details
- Journal
- Physical Review Applied
- Published
- 2024-12-20
- DOI
- https://doi.org/10.1103/physrevapplied.22.064081
- Citations
- 10
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 3.38
Funders
- National Science Foundation
- U.S. Department of Energy
- Office of Science
- Air Force Office of Scientific Research