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Okazaki Lab
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A lab that explores the mechanisms of superconductivity by studying the electrons emitted when light is shone on materials.
AboutAbout the lab
Seeing inside materials through emitted electrons.
The Okazaki Lab studies the electronic states inside materials using angle-resolved photoemission spectroscopy (ARPES), a technique that examines the electrons emitted when light is shone on a material.
Using a laser ARPES system with the highest performance in the world, the lab aims to elucidate how unconventional superconductors become superconducting.
Using time-resolved measurements with high-order harmonic lasers, the lab also investigates how electrons change after light irradiation, as well as photoinduced phase transitions.
In collaboration with laser development labs, the lab also works on developing the instruments themselves.
Key terms
- Angle-resolved photoemission spectroscopy (ARPES)
- A method that shines light on a material and measures the energy and direction of the emitted electrons to study the electronic states inside the material.
- Superconducting gap
- A gap that appears in the energy of electrons when a material becomes superconducting. It provides a clue to how superconductivity works.
- High-order harmonics
- Light generated when intense laser light is shone on a material, with frequencies many times that of the original light.
NewsLab news
A former Assistant Professor received the Director's Award of the Institute for Solid State Physics (ISSP Academic Encouragement Award)
In a collaboration with the University of Electro-Communications and others, topological superconductivity was demonstrated in β-PdBi2
A research group including Muroran Institute of Technology elucidated the mechanism behind the differences in luminescence lifetime and intensity among metals
A doctoral student received the Student Excellence Award of the Physical Society of Japan (Division 6: Metals and Low Temperature)
ResearchResearch themes
Using a laser ARPES system with the highest performance in the world, featuring extremely low temperatures and ultrahigh energy resolution, the lab aims to elucidate the superconducting mechanisms of unconventional superconductors. With a time-resolved photoemission spectroscopy system that uses high-order harmonic lasers, it also observes nonequilibrium electronic states and works to clarify the mechanisms of photoinduced phase transitions.
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MembersFaculty
The Okazaki Lab consists of faculty members, project specialists, doctoral and master's students, and international research students.As of 2026
- Associate ProfessorKozo OkazakiPublications ↗
- Assistant ProfessorRyohei IkedaPublications ↗
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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: “Sample holder in ultrahigh vacuum chamber for angle-resolved photoemission spectroscopy” Ponor / CC BY-SA 4.0 (cropped)
- Laser ARPES and Time-Resolved ARPES: “Femtosecond Laser and Pulse Compressor - Optics Lab - INRIM” Giorgio Brida from Torino, Italy / CC BY 2.0 (cropped)
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