Title :
All-Fiber Passively Q-Switched Laser Based on Tm3+-Doped Tellurite Fiber
Author :
Pei-Wen Kuan ; Kefeng Li ; Lei Zhang ; Xiaokang Fan ; Hasan, Tawfique ; Fengqiu Wang ; Lili Hu
Author_Institution :
Key Lab. of Mater. for High Power Laser, Shanghai Inst. of Opt. & Fine Mech., Shanghai, China
Abstract :
We report all-fiber passively Q-switched Tm3±-doped tellurite fiber lasers. The composite tellurite fiber is specially designed to improve the mechanical strength. Both carbon nanotubes (CNTs) and semiconductor saturable absorber mirror (SESAM) are inserted separately into the laser cavities as SAs to demonstrate a fiber-integrated setup. In a short, 9-cm tellurite fiber, 1.86-μm-pulsed lasers without self-modelocking effect are demonstrated by in-band pumping at 1.59 μm. An average power of 84 mW is obtained in CNT-pulsed laser with 860-ns duration, whereas in SESAM-pulsed laser, the average power reaches 21 mW with 516-ns pulsewidth.
Keywords :
Q-switching; carbon nanotubes; fibre lasers; laser beams; laser mirrors; nanophotonics; optical pumping; optical saturable absorption; tellurium compounds; thulium; CNT-pulsed laser; SESAM-pulsed laser; TeO3:Tm3+; all-fiber passively Q-switched Tm+-doped tellurite fiber lasers; carbon nanotubes; composite tellurite fiber; fiber-integrated setup; in-band pumping; laser cavities; mechanical strength; power 21 mW; power 84 mW; pulsed lasers; semiconductor saturable absorber mirror; size 9 cm; time 516 ns; time 860 ns; wavelength 1.59 mum; wavelength 1.86 mum; Fiber lasers; Laser excitation; Optical fiber amplifiers; Optical fiber couplers; Optical fiber dispersion; Power lasers; Pump lasers; Q-switching; Tellurite glass fiber; fiber lasers; tellurite glass fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2385812
