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Laser Materials Science (LMO) Lab
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The lab develops the materials and optical elements that underpin high-power lasers.
AboutAbout the lab
Materials and optical elements that drive laser performance.
The Laser Materials Engineering (LMO) Group researches new materials and optical elements to improve the efficiency and functionality of high-power lasers.
Its research targets include transparent ceramics and the optical functional materials made from them, nonlinear optical crystals for broadband wavelength conversion, specialty optical fibers, and broadband mirrors and diffraction gratings.
The lab also works on clarifying how lasers damage optical elements and on making elements more resistant to that damage (improving laser damage resistance).
Key terms
- Transparent ceramics
- Ceramics that transmit light. In this lab, they are used for laser materials and optical functional materials
- Nonlinear optical crystal
- A crystal that converts incident light into light of a different wavelength. Used for broadband wavelength conversion
- Laser damage threshold
- A measure of the intensity at which an optical element begins to be damaged by laser irradiation
ResearchResearch themes
Advancing laser science requires improving the efficiency and functionality of high-power lasers, which are a source of competitiveness. As a foundation for realizing advanced lasers, the LMO Group takes on the development of new laser materials and optical elements such as multilayer mirrors.
*Illustrative imageOptical materials and elements for power lasers
The lab fabricates and bonds laser materials made of transparent ceramics doped with rare-earth elements, controls the deuteration rate and achieves rapid growth of KDP crystals, and develops broadband diffraction gratings and mirrors.
*Illustrative imageOptical functional materials and elements, and industrial applications
The lab develops new functional optical materials by adding various elements to metal oxide ceramics. It develops items such as scintillators for medical diagnostic equipment together with other institutions, and specialty optical fibers together with other institutions and companies, using the only fiber drawing system at a university in Japan.
*Illustrative imageEvaluating laser damage and clarifying its mechanisms
As lasers reach higher intensities and higher repetition rates, damage to optical elements and their lifetime have become issues. The lab compiles a database of how laser damage thresholds relate to laser conditions and element properties, and studies the physics of damage with the aim of designing coatings with high damage resistance.
MembersFaculty
The members of the Laser Materials Engineering (LMO) Group are all faculty members.
- Associate ProfessorKana Fujioka
- Project ProfessorTakahisa Jitsuno
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: “High-power laser welding” Krorc / CC BY-SA 3.0 (cropped)
- Optical materials and elements for power lasers: “KDP crystal” Lawrence Livermore National Laboratory (LLNL). / Public domain (cropped)
- Optical functional materials and elements, and industrial applications: “Photomultiplier coupled to a scintillator - fr” Qwerty123uiop / CC BY-SA 3.0 (cropped)
- Evaluating laser damage and clarifying its mechanisms: “ESA laser testing ESA372639” European Space Agency / CC BY-SA 3.0 igo (cropped)
- Related lab (プラズマフォトニクス
（PPD） ): “Orion target chamber” Colin N. Danson et al. / CC BY 4.0 (cropped) - Related lab (材料・応用技術
（MAT） ): “6 Maiman Laser Ruby Crystal” Guy Immega / CC0 (cropped) - Related lab (超
広帯域フォトニクス （UP） ): “Ultraviolet laser effects” www.LaserLightShow.ORG / CC BY-SA 3.0 (cropped) - Related lab (パワーレーザーシステム工学
（PLS） ): “VULCAN laser hall with disc amplifiers 1986” Colin N. Danson et al. / CC BY 4.0 (cropped)
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