ISSP - The institute for Solid State Physics

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Itatani Group
Associate Professor
Jiro
ITATANI
Research Associate
Nobuhisa
ISHII
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In attosecond optical sciences, we can measure the dynamics of matter on unprecedented time scales with phase-stabilized intense ultrashort laser pulses and attosecond soft-x-ray pulses. One of the main objectives in attosecond sciences is to measure and control the multielectron dynamics of matter in highly excited states. Intense ultrashort-pulse lasers are also useful to produce optical pulses at different wavelength covering from soft x rays to IR and THz. It means that we can probe and control the ultrafast dynamics of matters through various freedoms. We work on the development of intense ultrashort-pulse lasers, and their applications to attosecond optical sciences. Especially we work on high harmonic generation, aiming to produce attosecond soft x-ray pulses for time-resolved soft-x-ray spectroscopy. We also work on the generation of intense IR and THz pulses and their applications to coherent control of atoms and molecules.

Soft x-ray spectra in the water window produced by an intense IR laser system.
High harmonic spectra in the water window and their dependence to carrier-envelope phase (CEP).

Research Subject

  1. Development of intense ultrashort-pulse lasers
  2. Generation of attosecond soft x-ray pulses, high harmonic generation, and their applications to ultrafast spectroscopy
  3. Coherent control and imaging of molecules using intense laser sources