Development on a unique structure of tunable fiber laser without a grating or an etalon

• Project/Area Number: 16K13700
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Optical engineering, Photon science
• Research Institution: Chiba Institute of Technology (2017); Osaka University (2016)
• Principal Investigator: FUJIMOTO Yasushi 千葉工業大学, 工学部, 教授 (70343241)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: レーザー / 光 / 波長可変 / ファイバ / 可視光 / 光ファイバ / 波長可変レーザー / ファイバレーザー / 可視光レーザー / 高性能レーザー

Outline of Final Research Achievements

This project was for establishing a new scheme of tunable fiber laser. I propose a very simple way to achieve a tunable laser skillfully using the chromatic aberration of a lens relay and a slit-like effect of the optical fiber core. The final results were not exactly the initial estimation of the project, but the tunable properties of fiber laser were partially achieved with installing a single-mode gain fiber and new optics and a new visible Q-switched fiber laser was developed with a saturable absorbed mirror in visible region in the same configuration of the tunable fiber laser. This means an emergency of new possibility of visible coherence light source.

Research Products

• [Journal Article] Visible Q-switched pulse laser oscillation in Pr-doped double-clad structured waterproof fluoride glass fiber with graphene (2018)
  • Author(s): Kajikawa Shota、Yoshida Minoru、Ishii Osamu、Yamazaki Masaaki、Fujimoto Yasushi
  • Journal Title: Optics Communications Volume: 424 Pages: 13-16
  • DOI: 10.1016/j.optcom.2018.04.024
  • Peer Reviewed
• [Journal Article] Visible ns-pulse laser oscillation in Pr-doped double-clad structured waterproof fluoride glass fibre with SESAM (2017)
  • Author(s): Kajikawa Shota、Yoshida Minoru、Motokoshi Shinji、Ishii Osamu、Yamazaki Masaaki、Fujimoto Yasushi
  • Journal Title: The Journal of Engineering Volume: 2017 Issue: 7 Pages: 407-409
  • DOI: 10.1049/joe.2017.0258
  • Peer Reviewed
• [Presentation] New Specialty Fiber and New Wavelength Fiber Lasers (2018)
  • Author(s): Y. Fujimoto
  • Organizer: Collaborative Conference on Laser Sources 2018 (OAHOST), Session:Lasers I A10, Coast Victoria Harbourside Hotel & MarinaVictoria, Canada, April 8th - 12th, 2018.
  • Int'l Joint Research / Invited
• [Presentation] Development of direct visible pulse fiber laser (2018)
  • Author(s): S. Kajikawa, M. Yoshida, O. Ishii, M. Yamazaki, and Y. Fujimoto
  • Organizer: OPIC 2018, ALPS in OPTICS & PHOTONICS International Congress 2018, ALPS13-D2-1, the Conference Center, Pacifico Yokohama, Yokohama, Japan, 26th April 2018.
  • Int'l Joint Research / Invited
• [Presentation] Visible Q-switched pulse generation in Pr-doped double-clad structured waterproof fluoro-aluminate glass fiber (2017)
  • Author(s): S. Kajikawa, T. Murakami, M. Yoshida, O. Ishii, M. Yamazaki, and Y. Fujimoto
  • Organizer: CLEOEurope-EQEC 2017, CJ.P.19, ICM - International Congress Centre, Munich, Germany, 25-29th June 2017.
  • Int'l Joint Research
• [Presentation] New Specialty Fiber and New Wavelength Fiber Lasers (2017)
  • Author(s): Y. Fujimoto
  • Organizer: CLEO-PR, OECC and PGC 2017, Oral 3-3 G-4, Sands Expo and Convention Centre, Singapore, 31th July - 4th August, 2017
  • Int'l Joint Research / Invited