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Strong Photon Field Science Lab (Iwasaki Lab)
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A lab exploring how atoms and molecules behave in intense laser light.
AboutAbout the lab
Watching atoms and molecules in intense light.
Iwasaki Lab studies how atoms and molecules behave when placed in extremely intense laser light (intense laser fields).
In intense laser fields, light-induced ionization and chemical reactions proceed in ways entirely different from those under weak light.
By observing this behavior, the lab reveals new interactions between light and atoms or molecules. It also develops the laser light sources that create intense laser fields, as well as spectroscopic methods that make use of this phenomenon.
The lab was newly established in 2022, and it accepts inquiries at any time from graduate school applicants and students who would like to visit the lab.
Key terms
- Intense laser fields
- A laser light field so intense that ordinary theories of light cannot describe it
- Ionization
- The process in which electrons are removed from an atom or molecule, turning it into an electrically charged ion
- Spectroscopy
- A method of investigating the structure and state of matter by measuring the interaction between matter and light
NewsLab news
View More ↗ResearchResearch themes
The lab investigates the interaction between atoms or molecules and light in intense laser fields, and observes the various ultrafast processes that occur together with photoionization. It also works on developing a new ultrahigh-resolution spectroscopy that applies ultrafast spectroscopy, spectroscopy using extreme ultraviolet and soft X-ray light, and new laser processing methods and laser light sources.
*Illustrative imageObserving ultrafast processes in atoms and molecules
Using time-resolved spectroscopy, in which two laser pulses separated by a delay time are applied to a molecule, the lab observes how molecules ionized by intense light break apart. The ejected fragment ions are measured with instruments such as a time-of-flight mass spectrometer.
*Illustrative imageDeveloping ultrahigh-resolution spectroscopy
Building on methods for observing ultrafast processes, the lab is developing a new ultrahigh-resolution spectroscopy that measures molecular vibrational frequencies with high precision, without being bound by the rules of conventional spectroscopy such as transition selection rules. Because it exploits a property widely found in molecules, the lab expects it to be applicable to many kinds of molecules.
MembersFaculty
The members of Iwasaki Lab consist of faculty members, project researchers, and master's and undergraduate students.As of 2025
- ProfessorAtsushi Iwasaki
- Project Associate ProfessorToshiaki Ando
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: “Femtosecond laser filament” Onlywww / CC BY 4.0 (cropped)
- Observing ultrafast processes in atoms and molecules: “Femtosecond Laser and Pulse Compressor - Optics Lab - INRIM” Giorgio Brida from Torino, Italy / CC BY 2.0 (cropped)
- Developing ultrahigh-resolution spectroscopy: “Femtosecond laser spark” Smirnov Semen / CC BY 4.0 (cropped)
- Related lab (量子フロンティア研究室
（山内研究室） ): “OPA produced femtosecond UV laser beam” Abdullahkepceoglu / CC BY-SA 4.0 (cropped) - Related lab (合田研究室): “Lab on a Chip ( )” National Institute of Standards and Technology / Public domain (cropped)
- Related lab (佃研究室): “Gold255” Aleksandar Kondinski / CC BY-SA 4.0 (cropped)
- Related lab (佐々
木研究室): “Platinum crystals” Periodictableru / CC BY 3.0 (cropped)
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