Development of high efficiency high-power ultrashort pulse laser and super continuum generation

• Project/Area Number: 25390120
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Ibaraki University
• Principal Investigator: NAKAMURA SHINKI 茨城大学, 工学部, 准教授 (90323211)
• Co-Investigator(Kenkyū-buntansha): SONE HIROYASU 北見工業大学, 工学部, 准教授 (00333667)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: レーザ / Yb:YAG / イッテルビウム / エルビウム / EDFA / 光ファイバ / フェムト秒 / YAGレーザ / Er添加ファイバ / レーザー / 光ファイバー / YAGレーザー / YAG

Outline of Final Research Achievements

A high-power diode-pumped passively mode-locked Yb:YAG ceramic laser was demonstrated. An average output power of 3.64 W with a pulse duration of 433 fs at a repetition rate of 90.9MHz was obtained at a wavelength of 1050 nm using a 2% output coupler. The laser pulse was injected into a low dispersion high nonlinear fiber. Any super continuum light could not be observed because of degraded laser beam quality. Next, we developed an erbium doped fiber amplifier. A mode-locked erbium doped fiber laser generated seed laser pulses at 6.7 mW and the seed pulses were amplified up to 33.9 mW. The amplified pulses are injected into highly nonlinear dispersion shifted fiber. However no super continuum were observed.

Research Products

• [Journal Article] High-Power Diode-Pumped Mode-Locked Yb:YAG Ceramic Laser (2014)
  • Author(s): Shinki Nakamura, Yuto Hikita, Hiroyasu Sone, Takayo Ogawa, Satoshi Wada
  • Journal Title: Optical Review Volume: 21 Pages: 401-403
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] ビスマス系高濃度Yb添加ファイバによる1.3 μm帯の蛍光特性 (2015)
  • Author(s): 葛 帥, 曽根 宏靖, 古瀬 裕章, 中村 真毅
  • Organizer: 平成27年度電気・情報関係学会北海道支部連合大会
  • Place of Presentation: 北見工業大学
  • Year and Date: 2015-11-07
• [Presentation] High-power diode-pumped mode-locked Yb:YAG ceramic laser (2013)
  • Author(s): Shinki Nakamura, Yuto Hikita, Hiroyasu Sone, Takayo Ogawa, Satoshi Wada
  • Organizer: The 10th Japan-Finland Joint Symposium on Optics in Engineering (OIE'13)
  • Place of Presentation: 栃木県宇都宮市
• [Presentation] Laser Performance of Yb-doped Vanadates Grown by Floating Zone Method (2013)
  • Author(s): Shinki Nakamura, Taishi Agata, Takayo Ogawa, Mikio Higuchi, Satoshi Wada
  • Organizer: Advanced Solid-State Laser Congress (ASSL2013)
  • Place of Presentation: Paris, France
• [Presentation] モード同期Yb添加YAGセラミックレーザの高出力化 (2013)
  • Author(s): 樫原翔太, 中村真毅, 鵜野克宏, 小川貴代, 和田智之
  • Organizer: 第74回応用物理学会秋季学術講演会
  • Place of Presentation: 京都府京田辺市