2007 Fiscal Year Final Research Report Summary
Femtceecond laserinduced nano-manipulation inside transparent materials
| Project/Area Number |
17206067
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Kyoto University |
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Principal Investigator |
HIRAO Kazuyuki Kyoto University, Graduate School of Engineering, Professor (90127126)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMOTSUMA Yasuhiko Kyoto University, Innovative Collaboration Center, Associate Professor (40378807)
YONESAKI Yoshinori Yamanashi University, Center for Crystal Science and Technology, Assistant Professor (20377592)
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| Project Period (FY) |
2005 – 2007
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| Keywords | Utrashort pulse laser / Plasmonics / Nanostructure / Glass / Inorganic material / Polarization control / Defect control / Optical device |
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| Research Abstract |
We achieved the periodic nanostructuring inside various materials without surface damage by using interference field or polarizing properties of femtosecond laser pulse. These achievements were based on the interaction between the photon and plasmon induced by the laser irradiation, because the femtosecond laser pulses have together features of ultra high photon intensity and ultra fast pulse duration. Especially, laser energy can be injected into a material before the coupling between an electron and a phonon reaches a state of thermodynamic equilibrium. In the case of fused silica, a periodic nanostructure with a pitch of 200 nm and a width of 20 nm was self-organized perpendicular to the laser polarization direction by the femtosecond single laser beam irradiation. This periodic nanostructure (viz. nanograting) consisted of the density modulation of the oxygen defects, and then the glass composition in the oxygen defect regions are modified from SiO_2 to SiO_1.6. We also confirmed t
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hat the periodic voids were formed and aligned in the plane perpendicular to the polarization of the light field in the case of a TeO_2 crystal. We speculate that due to the weaker binding energy of Te-O and its lower melting point of 733 ℃, a void was formed inside TeO_2 crystal. On the other hand, in the case of multicomponent glass including alkaline metals and alkaline earth metals, the polarization-dependent nanograting structure can not be formed, while Na and Ca elements, which are modifier elements, diffused away from the focal point. In order to reveal the formation mechanism of nanograting structure we investigated how nanograting structure was affected according to the laser intensity. From the systematic experiments, we have confirmed that the pitch of nanograting was changed from 100 to 400 nm with increasing laser fluence. We interpreted that the nanograting formation was related to the plasma formation during laser irradiation, especially, the electron plasma temperature during laser pulse irradiation was the important factor for the nanograting formation. Based on these basic researches, we fabricated the integrated micro optical devices such as grating, polarizer, and optical attenuator inside glass. Less
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Research Products
(66 results)
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[Journal Article] Application of femtosecond-laser induced nanostructures in optical memory2007
Author(s)
Y., Shimotsuma, M., Sakakura, K., Miura, J., Qiu, P., G., Kazansky, K., Fujita, K., Hirao
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Journal Title
Journal of Nanoscience and Nanotechnology Vol. 7
Pages: 94-104
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Kazansky. Photoconversion of copper flakes to nanowires with ultrashort pulse laser irradiation2007
Author(s)
Y., Shimotsuma, T., Yuasa, H., Homma, M., Sakakura, A., Nakao, K., Miura, K., Hirao, M., Kawasaki, J., Qiu, P., G
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Journal Title
Chemistry of Materials Vol. 19, No.6
Pages: 1206-1208
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Quill writing with ultrashort light pulses in transparent materials2007
Author(s)
P., G., Kazansky, W., Yang, E., Bricchi, J., Bovatsek, A., Arai, Y., Shimotsuma, K., Miura, K., Hirao
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Journal Title
Applied Physics Letters Vol. 90
Pages: 151120-1-3
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Observation of pressure wave generated by focusing a femtosecond laser pulse inside a glass2007
Author(s)
M., Sakakura, M., Terazima, Y., Shimotsuma, K., Miura, K., Hirao
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Journal Title
Optics Express Vol. 15, No.9
Pages: 5674-5686
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Three-dimensional deposition of silicon from silicate glass with dispersed metallic aluminum by a femtosecond laser2006
Author(s)
K., Miura, Y., Shimotsuma, M., Sakakura, S., Kanehira, M., Hamabe, K., Hirao
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Journal Title
Proceedings of SPLE Smart Materials, Nano-, and Micro-Smart Systems Vol. 6413
Pages: 64130, 1-13
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Periodic nanovoid structure via femtosecond laser irradiation2005
Author(s)
S., Kanehira, J., Si, J., Qiu, K., Fujita, K., Hirao
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Journal Title
Nano Letters Vol. 5, No.8
Pages: 1591-1595
Description
「研究成果報告書概要(欧文)」より
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[Presentation] The influence of thermal accumulation under the two-spot irradiation of femtosecond laser pultes inside a glass2008
Author(s)
M., Shimizu, M., Sakakura, Y., Shimotsuma, K., Miura, K., Hirao
Organizer
55th Annual Meeting of the Japan Society of Applied Physics
Place of Presentation
Funabashi, JPN
Year and Date
2008-03-27
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Morphology control of nanoparticled by femtosecond laser irradiation2007
Author(s)
A., Nakao, Y., Shimotsuma, M., Nishi, K., Miura, K., Hirao
Organizer
Pac Rim 2007
Place of Presentation
Shanghai, CHN
Year and Date
2007-11-11
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Photoconversion and evolution of one dimensional Cu nanoparticles under femtosecond laser irradiation2007
Author(s)
Y., Shimotsuma, G., Chang, A., Nakao, M., Sakakura, K., Miura, K., Hirao
Organizer
Annual Meeting on Photochemistry 2007
Place of Presentation
Nagano, JPN
Year and Date
2007-09-26
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Morphology control of nanoparticles by femtosecond laser irradiation2007
Author(s)
A., Nakao, Y., Shimotsuma, M., Nishi, K., Miura, K., Hirao
Organizer
20th Fall Meeting of the Ceramics Society of Japan
Place of Presentation
Nagoya, JPN
Year and Date
2007-09-12
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Three-dimensional nanomodification with ultrafast pulse laser2007
Author(s)
Y., Shimotsuma, M., Sakakura, K., Miura, P., G., Kazansky, K., Hirao
Organizer
FLAMN2007
Place of Presentation
Saint Petersburg, RUS
Year and Date
2007-06-25
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Formation of silicon structures in silicate glass by femtosecond laser2007
Author(s)
Y., Shimotsuma, K., Miura, M., Sakakura, S., Kanebira, K., Hirao
Organizer
Photonic West 2007
Place of Presentation
San Jose, USA
Year and Date
2007-01-20
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Nano-modification of transparent materials using ultrafast pulse laser2006
Author(s)
Y., Shimotsuma, K., Miura, J., Qiu, P., G., Kazansky, K., Hirao
Organizer
LAMP 2006
Place of Presentation
Tokyo, JPN
Year and Date
2006-05-16
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Precipitation of silicon crystal inside glass matrix by the ultrafast pulse laser irradiation2006
Author(s)
Y., Shimotsuma, K., Higashi, M., Hamada, K., Miura, K., Hirao
Organizer
Annual Meeting 2006 of the Ceramics Society of Japan
Place of Presentation
Tokyo, JPN
Year and Date
2006-03-14
Description
「研究成果報告書概要(欧文)」より
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[Presentation] Nano-modification of transparent materials using ultrafast pulse laser2006
Author(s)
Y., Shimotsuma, J., Qiu, K., Miura, R., G., Kazansky, K., Hirao
Organizer
Japan NANO 2006
Place of Presentation
Tokyo, JPN
Year and Date
2006-02-20
Description
「研究成果報告書概要(欧文)」より
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