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2007 Fiscal Year Annual Research Report

衝撃波によるナノ構造物質の形成

Research Project

Project/Area Number 19360322
Research InstitutionHokkaido University

Principal Investigator

JUODKAZIS Saulius  Hokkaido University, 電子科学研究所, 准教授 (80332823)

Co-Investigator(Kenkyū-buntansha) 田中 悟  九州大学, 大学院・工学研究院, 教授 (80281640)
Keywordsプラズマ処理 / レーザー加工
Research Abstract

本年度はレーザー光を物質内部に集光照射したときのサンプルの後方イメージング観察及びサンプルの反射率・透過率変化を測定するための実験システムを構築し、レーザー光照射時の物質の挙動を詳細に解析した結果、以下のような研究成果を得た。
1.20種類以上のガラスについて、ボイドが形成されるメカニズムを確立し、ガラス中の酸素濃度がボイドの形成されるレーザー光強度の閾値に影響を与えることを明らかにした。
2.シリカガラス内部のフィラメントにおいて、光プローブでは測定することが困難な超臨界プラズマが形成されることを光音響測定によって初めて観測した。
3.レーザー光を集光照射することで物質の形状が変化し、それに伴って相転移が誘起されることを明らかにした[1]。
[1]N. Murazawa, S. Juodkazis, H. Misawa, and H. Wakatsuki, "Laser trapping of deformable objects," Opt. Express 15(20), pp. 13310-13317, 2007.

  • Research Products

    (23 results)

All 2008 2007

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (13 results)

  • [Journal Article] Acoustic monitoring of microplasma formation and filamentation of tightly focused femtosecond laser pulses in silica glass2008

    • Author(s)
      S. I. Kudryashov
    • Journal Title

      Appl. Phys. Lett. 92

      Pages: 101916

    • Peer Reviewed
  • [Journal Article] Formation of nano-voids in transparent dielectrics by femtosecond lasers2008

    • Author(s)
      E. G. Gamaly
    • Journal Title

      Curr. Appl. Phys. 8

      Pages: 412-415

    • Peer Reviewed
  • [Journal Article] Statics and dynamics of radial nematic droplets manipulated by laser tweezers2008

    • Author(s)
      E. Brasselet
    • Journal Title

      Phys. Rev. E (In press)

    • Peer Reviewed
  • [Journal Article] Coupled laser molecular trapping, cluster assembly, and deposition fed by laser-induced Marangoni convection2008

    • Author(s)
      O. A. Louchev
    • Journal Title

      Opt. Express 16

      Pages: 5673-5680

    • Peer Reviewed
  • [Journal Article] Laser processing of sapphire by femtosecond pulses2008

    • Author(s)
      S. Juodkazis
    • Journal Title

      Appl. Phys. A

      Pages: accepted

    • Peer Reviewed
  • [Journal Article] Laser induced memory bits in photorefractive LiNbO3 and LiTaO32008

    • Author(s)
      S. Juodkazis
    • Journal Title

      Appl. Phys. A

      Pages: accepted

    • Peer Reviewed
  • [Journal Article] Two-photon excitation of dye-doped liquid crystal by a cw-laser irradiation2008

    • Author(s)
      N. Murazawa
    • Journal Title

      Mol. Cryst. Liq. Cryst

      Pages: accepted

    • Peer Reviewed
  • [Journal Article] Void formation in glass2007

    • Author(s)
      T. Hashimoto
    • Journal Title

      New. J. Phys. 9

      Pages: 253/1-9

    • Peer Reviewed
  • [Journal Article] Laser trapping of depormable objects2007

    • Author(s)
      N. Murazawa
    • Journal Title

      Opt. Express 15

      Pages: 13310-13317

    • Peer Reviewed
  • [Journal Article] Machanical properties and tuning of three-dimensional polymeric photonic crystals2007

    • Author(s)
      S. Juodkazis
    • Journal Title

      Appl. Phys. Lett. 91

      Pages: 241904

    • Peer Reviewed
  • [Presentation] 3D structuring of materials by femtosecond pulses2008

    • Author(s)
      S. Juodkazis
    • Organizer
      Progress in Electromagnetics Research Symposium
    • Place of Presentation
      杭州グランドメトロパークホテル、杭州、中国
    • Year and Date
      20080324-28
  • [Presentation] Three dimensional femtosecond laser structuring in optical materials2008

    • Author(s)
      W. Krolikowski
    • Organizer
      Progress on Electromagnetics Research Symposium
    • Place of Presentation
      杭州グランドメトロパークホテル,Hangzhou, China
    • Year and Date
      20080324-28
  • [Presentation] Femtosecond laser structuring in dielectrics2008

    • Author(s)
      S. Juodkazis
    • Organizer
      American Physical Society March Meeting
    • Place of Presentation
      New Orleans Marriott, New Orleans, USA
    • Year and Date
      20080310-14
  • [Presentation] Three-dimensional recording inside dielectrics for photonic applications2008

    • Author(s)
      S. Juodkazis
    • Organizer
      MOEMS-MEMS, Photonics West
    • Place of Presentation
      San Jose Convention Center, San Jose, USA
    • Year and Date
      20080119-24
  • [Presentation] Reversible photomodification of LiNbO3 and LitaO3 by femtosecond laser pulses2007

    • Author(s)
      V. Mizeikis
    • Organizer
      Microelecronics, MEMS, and Nanotechnology
    • Place of Presentation
      オーストラリア国立大学,Canberra, Australia
    • Year and Date
      20071205-07
  • [Presentation] Three-dimensional femtosecond laser microfabrication, Non-linear and photochemical effects due to plasmonic near-field on gold nanoparticles2007

    • Author(s)
      S. Juodkazis
    • Organizer
      Symposium on Promotion of Academic Excellence & Symposium on Frontier Biomedical and Electro-Optical Science
    • Place of Presentation
      台湾師範大学,Taipei, Taiwan
    • Year and Date
      20071115-16
  • [Presentation] Laser manipulation of liquid crystal droplets2007

    • Author(s)
      S. Juodkazis
    • Organizer
      12th international Topical meeting on Optics of Liquid Crystals
    • Place of Presentation
      NH Hotel, Puebla, Mexico
    • Year and Date
      20071001-05
  • [Presentation] Three-dimensional femtosecond laser microfabrication2007

    • Author(s)
      S. Juodkazis
    • Organizer
      COLA
    • Place of Presentation
      Hotel Playa la Arena, Tenerife, Spain
    • Year and Date
      20070924-28
  • [Presentation] Laser induced memory bits in photorefractive LiNbO32007

    • Author(s)
      S. Juodkazis
    • Organizer
      COLA
    • Place of Presentation
      Hotel Playa la Arena, Tenerife, Spain
    • Year and Date
      20070924-28
  • [Presentation] Three-dimensional laser nano-/micro-fabrication by femtosecond pulses2007

    • Author(s)
      S. Juodkazis
    • Organizer
      CLEO/Pacific Rim
    • Place of Presentation
      Convention&Exhibition Center, Seoul, Korea
    • Year and Date
      20070826-31
  • [Presentation] Multi-megabar pressure and super-dense materials creaated by laser-induced micro-explosion inside of transparent solid2007

    • Author(s)
      E. G. Gamaly
    • Organizer
      15th APS Topical Conference on Shock Compression of Condensed Matter
    • Place of Presentation
      Kohala Coast Hawaii, USA
    • Year and Date
      20070624-29
  • [Presentation] Three-dimensional laser microfabrication2007

    • Author(s)
      S. Juodkazis
    • Organizer
      ICONO/LAT(laser, applications, and technologies)
    • Place of Presentation
      ベラルーシ国立科学アカデミー,Minsk, Balarus
    • Year and Date
      20070528-0601
  • [Presentation] Formation of nano-fibers and micro-spheres by femtosecond laser ablation of chalcogenide glass2007

    • Author(s)
      O. Louchev
    • Organizer
      ICONO/LAT(laser, applications, and technologies)
    • Place of Presentation
      ベラルーシ国立科学アカデミー,Minsk, Balarus
    • Year and Date
      20070528-0601

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Published: 2010-02-04   Modified: 2016-04-21  

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