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Tokita Lab
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The lab develops ultra-high-intensity lasers itself to explore new interactions with matter.
AboutAbout the lab
Opening the future of photon science with high-intensity lasers.
The Laser Matter Science Lab (Tokita Lab) studies the interaction between ultra-high-intensity lasers and matter.
The lab develops its own world-leading laser systems and takes on the challenge of using them to discover new interactions.
The lab is located at the Institute for Chemical Research (Uji Campus) and accepts graduate students as the Laser Matter Science subgroup of Physics II in the Graduate School of Science.
Key terms
- Mid-infrared laser
- A laser with a wavelength of about 3 to 5 micrometers, longer than that of visible light
- Ultrashort pulse
- An extremely short pulse of light that lasts for less than one trillionth of a second
- Double beta decay
- An extremely rare phenomenon in which two beta decays occur simultaneously within a nucleus
NewsLab news
A joint research paper on broadband terahertz spectroscopy using a Cr:ZnS laser was published in Optics Express
A paper on an Fe:ZnSe chirped-pulse amplifier was published in Optics Express
An explanatory article by the lab's faculty members and others won the Laser Society of Japan Achievement and Paper Award (Review Article category)
A paper on a Cr:ZnS femtosecond laser oscillator was published in Optics Letters
A student won the Outstanding Student Presentation Award at the 80th Annual Meeting of the Physical Society of Japan
ResearchResearch themes
The lab studies the interaction between ultra-high-intensity lasers and matter. It develops world-leading laser systems itself and takes on the challenge of discovering new interactions with them.
*Illustrative imageDevelopment of Mid-Infrared Lasers
The lab develops technology for ultrashort-pulse mid-infrared lasers with wavelengths of 3 to 5 microns. Using solid-state lasers, fiber lasers, optical parametric amplification, and related technologies, it aims to generate terawatt-class mid-infrared pulses.
*Illustrative imageGeneration of Coherent X-rays
The lab studies the generation of coherent X-rays through the interaction of solid surfaces with mid-infrared ultra-high-intensity lasers or near-infrared ultra-high-intensity lasers (the T6 laser).
*Illustrative imageLasers for Double Beta Decay
In collaboration with Osaka University and the University of Fukui, the lab aims to observe the double beta decay of ⁴⁸Ca. To enrich the ⁴⁸Ca isotope using a high-power laser, it is developing a narrow-linewidth, high-power laser with a wavelength of 423 nm.
MembersFaculty
The members of the Tokita Lab consist of faculty, researchers, doctoral and master's students, and technical assistants and secretaries.As of 2026
- ProfessorShigeki Tokita
- Assistant ProfessorDaiki Okazaki
- Assistant ProfessorYuri Kirita
- Assistant ProfessorAnna Suzuki
VoicesStudent voices
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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: “U.S. Department of Energy - Science - )” U.S. Department of Energy from United States / Public domain (cropped)
- Development of Mid-Infrared Lasers: “Femtosecond laser” Mina.ashrafzade / CC BY-SA 4.0 (cropped)
- Generation of Coherent X-rays: “Three step model of high-harmonic generation” Kenichi L. Ishikawa / CC BY-SA 4.0 (cropped)
- Lasers for Double Beta Decay: “DBD-ParticlesInteraction-bb0nn” Lector 13 / Public domain (cropped)
- Related lab (Particle Beam Science Lab (Wakasugi)): “ASTRID-Storage-Ring-2010” Nykj / CC BY-SA 3.0 (cropped)
- Related lab (Nuclear Radiation Physics Lab): “Sp8-3972” Nnn / CC BY-SA 3.0 (cropped)
- Related lab (Galaxy Physics Lab): “Okayama observatory (Kyoto University)” GeeKay / Public domain (cropped)
- Related lab (Optical Properties of Matter Lab): “Femtosecond Pulse Laser at Cornell University” paul_houle / CC BY-SA 2.0 (cropped)
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