| Project/Area Number |
14205050
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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 |
電子デバイス・機器工学
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| Research Institution | Tohoku University |
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Principal Investigator |
MIYAGI Mitsunobu Tohoku University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (90006263)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUURA Yuji Tohoku University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (10241530)
SHI Yi-wei Tohoku University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (90323063)
SATO Shunichi National Defense Medical College, Defense Medical Research Center, Associate Professor, 防衛医学研究センター, 助教授
IWAI Katsumasa Sendai National College of Technology, Information Science Department, Research Associate, 情報通信工学科, 助手 (10361130)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥54,340,000 (Direct Cost: ¥41,800,000、Indirect Cost: ¥12,540,000)
Fiscal Year 2004: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000)
Fiscal Year 2003: ¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2002: ¥29,510,000 (Direct Cost: ¥22,700,000、Indirect Cost: ¥6,810,000)
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| Keywords | Hollow optical fiber / Infrared laser / Femto-optical pulse / Nd : YAG laser / Laser treatment / Minimally invasive treatment / フェムト秒レーザ / Nd:YAGレーザ / 最小襲侵医療 / パルスレーザ / レーザ医療 / 誘電体内装中空ファイバ |
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| Research Abstract |
The purpose of this research is to develop a flexible delivery system for femto-pulse lasers and high-powered Nd : YAG lasers oscillated in near infrared wavelengths by using a dielectric-coated, hollow metallic optical fiber. Since ultrashort and ultrahigh-energy pulses enable highly efficient ablation of human tissues, the delivery system is necessary for safety and painless medical treatment.
The following results were obtained in this research :
1.Fabrication of silver-coated hollow fibers with highly-smooth surface and high mechanical intensity
2.Study on mechanism of formation of dielectric polymer film and development of coating method
3.Smoothening of inner surface of silver-coated hollow fibers
4.Fabrication and evaluation of hollow optical fibers for GW-class Nd : YAG lasers
5.Loss reduction of polymer-coated hollow optical fibers
6.Evaluation of hollow fibers for Q-switched Nd : YAG lasers and improvement of durability for high power pulses
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