Relationship between the structural disorder and optical properties in rare-earth doped silica glasses

• Project/Area Number: 22560672
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Inorganic materials/Physical properties
• Research Institution: Toyota Technological Institute
• Principal Investigator: SAITO Kazuya 豊田工業大学, 工学部, 教授 (20278394)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2010: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 機能性ガラス / ファイバレーザー / ファイバアンプ / シリカガラス / ﾌｫﾄﾀﾞｰｸﾆﾝｸﾞ / フォトブリーチング / 仮想温度 / 希土類 / フォトダークニング

Research Abstract

It is important for realizing the high-power fiber laser and high-efficient fiber amplifier to clarify the relationship between the optical properties and fictive temperature in rare-earth doped silica glasses. It was found that optical properties, such as, emission intensity, emission lifetime, photodarkening, strongly depend on the fictive temperature. This fact is very informative to improve the performances of fiber laser and amplifier.

Research Products

• [Journal Article] Sekiya, Difference in structural relaxation times of inner surface and bulk region of silica glass arc tube (2013)
  • Author(s): T. Honma, N. Tamura, K. Saito, and E.H.
  • Journal Title: N.J.Glass and Ceram Volume: 3 Pages: 48-52
  • Peer Reviewed
• [Journal Article] Difference in Structural Relaxation Times of Inner Surface and Inner Bulk Region of Silica Glass Arc Tube (2013)
  • Author(s): T.Honma, N. Tamura, K. Saito, an E. Sekiya
  • Journal Title: N.J. Glass and Ceram Volume: 3 Issue: 01 Pages: 48-52
  • DOI: 10.4236/njgc.2013.31008
  • Peer Reviewed
• [Presentation] Yb添加シリカガラスのフォトフリーチング (2012)
  • Author(s): 見波大輝、E.関谷、齊藤和也
  • Organizer: 応用物理学会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2012-03-07
• [Presentation] Yb添加シリカガラスのフォトダークニング/フォトフリーチング (2012)
  • Author(s): 齊藤和也、E.関谷、見波大輝
  • Organizer: The 22nd Meeting on Glasses for Photonics 2012
  • Place of Presentation: 東京工業大学
  • Year and Date: 2012-02-07
• [Presentation] Mechanisms of photodarkening and methods to investigate the structuralchanges (2011)
  • Author(s): K. Saito
  • Organizer: International Congress on Glass
  • Place of Presentation: Dresden, Germany
  • Year and Date: 2011-10-04
• [Presentation] Yb添 加シリカガラスのフォトダークニング (2011)
  • Author(s): 勝浦翔平、E. H. Sekiya, 齋藤和也
  • Organizer: 応用 物理学会
  • Place of Presentation: 山形大学
  • Year and Date: 2011-08-31
• [Presentation] Yb添 加シリカガラスのフォトブリーチング (2011)
  • Author(s): 齋藤和也、E. H. Sikiya, 齋藤和也
  • Organizer: 応用物理学会
  • Place of Presentation: 山形大学
  • Year and Date: 2011-08-31
• [Presentation] Yb添加シリカガラスのフォトダークニング (2011)
  • Author(s): 勝浦翔平、E.H.関谷、齋藤和也
  • Organizer: 応用物理学会
  • Place of Presentation: 山形大学
  • Year and Date: 2011-08-31
• [Presentation] Hole trap center induced by x-ray irradiation on Yb doped silica glass (2010)
  • Author(s): E. H. Sekiya, M.Amano, and K. Saito
  • Organizer: International Congress on Glass
  • Place of Presentation: Dresden, Germany
  • Year and Date: 2010-10-04
• [Presentation] Mechanisms of photodarkening and methods to investigate the structural changes (2010)
  • Author(s): K.Saito
  • Organizer: International Laser Symposium Fiber and Disc
  • Place of Presentation: Dresden, Germany(招待講演)
  • Year and Date: 2010-10-04
• [Presentation] Hole trap center induced by x-ray irradiation on Yb doped silica glass (2010)
  • Author(s): E.H.Sekiya, M.Amano, K.Saito
  • Organizer: International Congress on Glass
  • Place of Presentation: Bahia, Brasil
  • Year and Date: 2010-10-04