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Satoh Lab
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This lab uses ultrashort-pulse lasers to manipulate magnetic and chiral materials.
AboutAbout the lab
Light in the lead role, manipulating spins
The Satoh Lab uses ultrashort-pulse lasers and other tools to control and measure magnetic and chiral materials.
The lab aims to directly manipulate electron spins with light pulses, achieving fast and free control.
The lab is developing ways to generate spin waves with light without using heat, aiming to open up a new field called 'optomagnonics.'
The lab is recruiting undergraduate thesis students and graduate students, and lab visits are welcome at any time.
Key terms
- Spin
- A property of electrons that acts like a tiny magnet. It underlies the properties of magnetic materials.
- Spin wave
- A phenomenon in which oscillations in the direction of spins propagate through a material like a wave. It can travel even in insulators and does not generate heat.
- Chiral material
- A material whose structure cannot be superimposed on its mirror image, like a right hand and a left hand.
NewsLab news
Paper published in Physical Review Letters
Paper published in Physical Review B
Paper published in Nature Communications
Paper published in Japanese Journal of Applied Physics
A PhD student received the Poster Presentation Award at the Annual Meeting of the Magnetics Society of Japan
ResearchResearch themes
The lab uses light, including ultrashort-pulse lasers, to control and measure spins and lattice vibrations in magnetic and chiral materials. Its goal is fast and free control of spins, with light playing the lead role.
*Illustrative imageUltrafast spin control in antiferromagnets
The lab combines temporally shaped light pulses with antiferromagnets, in which spins precess at terahertz frequencies, an extremely high speed. The aim is ultimate fast and free spin control.
*Illustrative imageOptomagnonics
The lab devised a way to generate spin waves with circularly polarized pulses without using heat. It has also proposed a method to change the direction in which spin waves travel by how the light is applied, and aims to realize ultrafast opto-magnetic switching devices using femtosecond lasers.
Opto-spintronics
The lab studies spin currents generated by light and spin-polarized states. It aims to use them to control the direction of magnetization and to create magnetic devices that operate at ultrafast speeds with light alone.
*Illustrative imageOptical chiral phononics
The lab studies lattice vibrations that propagate while rotating through three-dimensional chiral materials (chiral phonons), using circularly polarized Raman scattering and first-principles calculations. This is expected to lead to a new method for transferring angular momentum from light to electron spins.
MembersFaculty
The Satoh Lab consists of faculty members, researchers, PhD, master's, and undergraduate students, research students, and secretaries.As of 2026
- ProfessorTakuya SatohPublications ↗
- Assistant ProfessorKihiro YamadaPublications ↗
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Femtosecond Laser and Pulse Compressor - Optics Lab - INRIM” Giorgio Brida from Torino, Italy / CC BY 2.0 (cropped)
- Ultrafast spin control in antiferromagnets: “Femtosecond Pulse Laser at Cornell University” paul_houle / CC BY-SA 2.0 (cropped)
- Optomagnonics: “OPA produced femtosecond UV laser beam” Abdullahkepceoglu / CC BY-SA 4.0 (cropped)
- Optical chiral phononics: “Raman Spectroscopy device by Bruker” Ijon / CC BY-SA 4.0 (cropped)
- Related lab (村上研究室): “Horseshoe Magnetic Filings (Flipped 180)” Noguarde / CC BY-SA 4.0 (cropped)
- Related lab (松尾研究室): “Dilution Refrigerator ( )” UCL Mathematical & Physical Sciences from London, UK / CC BY 2.0 (cropped)
- Related lab (于研究室): “Neel skyrmion coneplot” Forschungszentrum Jülich / CC BY 4.0 (cropped)
- Related lab (納富研究室): “Entimus imperialis' photonic crystal” Sébastien R. Mouchet & Jean-François Colomer / CC BY-SA 4.0 (cropped)
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