Wavelength tunable Q-switch laser in visible region with Pr 3+-doped fluoride-glass fiber pumped by GaN diode laser

Junichiro Kojou, Yojiro Watanabe, Priyanka Agrawal, Toshihiro Kamimura, Fumihiko Kannari

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


We demonstrate pulse laser operation of a 4-cm-long Pr3+-doped fluoride-glass fiber laser pumped by InGaN laser diodes (444 nm) using an acousto-optic modulator. We obtained maximum laser peak power of 105.6 W (2.1 μJ/pulse) with a pulse width of 20 ns at an 8.3-kHz repetition rate for a 607-nm wavelength. Employing a prism tuning cavity, we obtained wavelength tunable Q-switch pulse laser oscillation in the visible region (488-491, 520-526, 601-624, 631-644 nm).

Original languageEnglish
Pages (from-to)136-140
Number of pages5
JournalOptics Communications
Publication statusPublished - 2013 Mar 1


  • Active Q-switching
  • Solid-state lasers
  • Tunable lasers
  • Visible lasers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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