Application of Collaborative Research：STEP1 Research Field
Collaborative Research Technical Committee believe that the goal of ‘Collaborative Research’ is continuous expansion of our community having competitiveness in the world. For that purpose, it is strategically important to promote the collaborative research subject by having a core topic and form the research group. To this direction, following nine research subjects are defined as the core topics for the Collaborative Research to promote the development of High-Power Laser and the high energy-density science using high-power lasers. We place a contact person as host of each research group. We expect you to submit a proposal to one of the research subjects. Your proposal will be reviewed by the committee whether it is fit to the research direction in that research subject. Please first contact to the host person to check appropriateness of your proposal in that category.
1. High Energy Density Science
1-1 Laser Astrophysics (contact scientist; Associate Prof. Sakawa )
Utilizing high-temperature, high-energy-density, and ultra-high flow-velocity plasmas observed only in the Universe, by large-energy/high-power lasers in the laboratories, we aim at understanding plasma physics and astrophysics. A lot of astrophysical phenomena such as collisionless shock generation, magnetic reconnection, plasma-jet collimation, instabilities, are related to explosion and instantaneous energy-release. We simulate these phenomena in the laboratory using pulse lasers. Relativistic Laser Astrophysics, such as electron-positron plasma generation, and particle acceleration, using high-intensity lasers is also an important topic.
We also study theory and simulation on the topics shown above.
(a) Laser Plasma Astrophysics: Experiment
(b) Laser Plasma Astrophysics: Theory/Simulation
1-2 High Pressure / Laser Earth & Planetary Science (contact scientist; Prof. Shigemori )
High-energy laser can generate extreme pressure and temperature conditions beyond the limit of traditional high-pressure apparatus such as large volume press, diamond anvil cell and light-gas gun. It can be applied to study physical properties of the Earth and planetary materials, various impact phenomena of planetary surface. We investigate EOS of shocked material, high-pressure phase transitions, physical properties of solid and liquid, deformation and breaking mechanism, acceleration and impact process, degassing and vaporization of shocked material, synthesis and chemical reaction of prebiotic materials, gravitational instability simulating core formation and so on, using newly developed in-situ measurements and recovery methods to clarify the formation process, internal structure and evolution of the Earth and other planets including Super-Earths.
(a) In-situ Measurements of Shock-compressed Materials
(b) High-speed Impact and Recovery of the Sample
1-3 High Magnetic Field Science (contact scientist; Prof. Fujioka)
Combination between laser-produced strong magnetic field and high-energy-density plasma can open a novel field of plasma physics.
Final objectives of this planned subject are to develop experimental platform utilizing 100 kT and also to build out domestic and international networks.
We welcome your proposals to develop novel generation schemes of strong magnetic field, to control generation and transport of laser-accelerated beams, to understand high-energy-density-plasma physics under the strong magnetic field, and to apply the strong magnetic field to ICF and MCF plasmas.
We also welcome interdisciplinary proposals, for example, plasma propulsion with strong magnetic field and x-ray spectroscopy under strong magnetic field for x-ray astronomy applications.
1-4 Quantum Beam Science (contact scientist; Associate Prof. Yogo)
Laser-produced plasma generates high energy particles, including ions, electrons, and neutrons, and intense radiative emission ranging from extreme ultra violet (EUV) to gamma-ray. This research project amis at investigating Laser Quantum Beams mentioned above, especially on its generation mechanism, energy scaling, demonstration of applications, and improvement of performances (e.g., generation efficiency, monochromaticity, highest energy, stabilization, control of emittance e.t.c.). This research project will be collaboratively carried out by a few groups using facilities at ILE and possibly at other institutions. Major subjects will be
(a) Laser-driven Particle Acceleration and Neutron Generation and Applications
(b) Laser-driven x- or gamma-rays and Applications
(c) Laser-driven Nuclear Physics and Application
1-5 Plasma Science (contact scientists; Prof. Shiraga and Prof. Sentoku )
A research proposal on the plasma science in relation to the high energy density science excluding the above subjects is welcome for both theoretical and experimental researches.
2. Laser Science and Optics
2-1 Terahertz Science (contact scientist; Associate Prof. Nakajima )
Developments of terahertz (THz) devices such as Terahertz emitter, detector, and other THz components will be performed. Various applications of THz waves using femtosecond pulsed laser such as THz time domain spectroscopy and THz imaging will also be investigated. THz properties of semiconductors, superconductors, magnetic materials, biological materials, and nonlinear optical crystals etc. can be evaluated and they will be utilized for THz devices. Superconducting photonics and strongly correlated electron photonics will be explored using these devices, together with application of metamaterials which are new artificial materials to THz technology.
(a) THz Technology
(b) Superconducting Photonics and Strongly Correlated Electron Photonics
2-2 Power Laser Science (contact scientist; Prof. Kawanaka )
Novel technique and technology for the next power laser operation with a high pulse energy in a highly repeatable operation are required to open and activate the advanced science, medical and industry. In addition, introduction of information and communication technology (ICT) such as AI and IoT into the next power laser increases users and extends application fields due to its autonomously controlled operation for multipurpose.
(a) Basic technical elements and technology for the next high power laser
(b) Phase, wavefront and spectral control
(c) Introduction of ICT into the next power laser and its operation
2-3 Laser & Optical Material (contact scientists; Prof. Sarukura and Prof. Yoshimura )
Next-generation light sources open infinite possibilities in optical technology for basic and applied research from environmental monitoring to high-power laser development. For example, ultrashort optical pulsed lasers in the ultraviolet (UV) to deep ultraviolet (DUV) region can be used for material processing and gas sensing applications. We are then investigating various laser and optical materials, both experimentally and theoretically, such as oxide and fluoride glasses, crystals, and nanostructures. We aim to (1) develop and characterize novel optical materials, (2) understand their properties and applications, (3) reduce detrimental crystal defects, (4) develop damage resistant lenses, windows, and scintillators, and (5) realize high-power DUV lasers and processing machines. Together with researchers inside and outside Japan, the general topics of our research interest include:
(a) Deep ultraviolet lasers
(b) Laser and optical materials research
(c) Terahertz studies and applications
3-1 Physical Informatics (contact scientist; Associate Prof. Nagatomo )
4-1 Collaborative Research General Subjects (contact scientist; Prof. Nakai )
The theme based on a free conception of the researcher that uses the device and the calculation code, etc. supplied to sharing and a Collaborative Research at this center is recruited. It applies every single fiscal year and is examined/evaluated.