Abstract： We study theoretically the photoelectron angular distributions (PADs) from two-color two-photon near-threshold ionization of hydrogen and noble gas (He, Ne, and Ar) atoms by a combined action of femtosecond extreme ultraviolet (EUV) and near-infrared (IR) laser pulses. By using second-order time-dependent perturbation theory, we clarify how the two-photon ionization process depends on the EUV-IR pulse delay and how it is connected ...

Ryohto Sawada (D2) received "36th Young Scientist Oral Presentation Award" by The Japan Society of Applied Physics (JSAP) for his presentation "Analysis of strong-field enhanced ionization of molecules using Bohmian trajectories”.  The ceremony was held on September 17th, 2014.  Congratulations!

Our research includes: theoretical study and simulations on interactions of ultrafast lasers with atoms, molecules, matters and living organisms, and ion beams for cancer treatment. We are one of the world’s top-runners, most notably in the first-principles simulation of atoms and molecules irradiated by high-intensity femtosecond and attosecond lasers.

Ishikawa Laboratory welcomes post-doctoral researchers from all over the world, especially those who have worked on the areas of AMO (atomic, molecular and optical) science, laser-matter interaction, quantum chemistry, TDFFT (time-dependent density-functional theory), Monte-Carlo simulation in medical physics.

We welcome motivated international graduate students. If you wish to devote yourself in an inter-disciplinary study and challenge yourself to have invaluable experiences at one of the top university in Japan and the world, please contact us.

We, Ishikawa Laboratory, are seeking collaborative research opportunities with universities, research institutes and companies worldwide in both theoretical and experimental studies, to achieve greater goals together in quantum mechanics simulation and ion beams for cancer radiation therapy. Please feel free to contact us.