Presentation 2000/10/18
Efficient 2 μm Tm-doped Ring Fiber Laser
Jianqiu Xu, M. Prabhu, Da Xing, Ken-ichi Ueda,
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Abstract(in English) Because of the quasi-three level natural of the thulium-doped laser, reabsorption on the laser transition results in a low efficiency and a high threshold for the laser operation. In order to maintain high pumping along the whole fiber without loss on the pumping efficiency. A ring cavity was constructed by polishing one fiber end in 45 degree. The emitting light from this end will be perpendicular to the axis of the fiber by the internal total reflection. Then the pumping and lasing waves can be re-circled in the ring cavity. Because or the unbalanced couple efficiency between the forward and backward directions, unidirectional output can be reached. A maximum output of 2.7 W was generated for a fiber length of 80 cm and a 50% output couple with the launched power of 11.5W. The maximum slope efficiency of 39% was also obtained.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Fiber Laser / Ring Cavity / Infrared Laser
Paper # LQE2000-63
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Conference Information
Committee LQE
Conference Date 2000/10/18(1days)
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Registration To Lasers and Quantum Electronics (LQE)
Language ENG
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Efficient 2 μm Tm-doped Ring Fiber Laser
Sub Title (in English)
Keyword(1) Fiber Laser
Keyword(2) Ring Cavity
Keyword(3) Infrared Laser
1st Author's Name Jianqiu Xu
1st Author's Affiliation Institute for laser science, University for Electron-communications()
2nd Author's Name M. Prabhu
2nd Author's Affiliation Institute for laser science, University for Electron-communications
3rd Author's Name Da Xing
3rd Author's Affiliation Institute for laser science, University for Electron-communications
4th Author's Name Ken-ichi Ueda
4th Author's Affiliation Institute for laser science, University for Electron-communications
Date 2000/10/18
Paper # LQE2000-63
Volume (vol) vol.100
Number (no) 391
Page pp.pp.-
#Pages 4
Date of Issue