Title :
High-Energy Near Transform-Limited Pulses From an Ultrafast Thulium-Doped All-Fiber MOPA
Author :
Liu, Jiang ; Wang, Pu
Author_Institution :
Nat. Center of Laser Technol., Beijing Univ. of Technol., Beijing, China
Abstract :
We report on a high-energy ultrafast thulium-doped all-fiber master oscillator power amplifier system with a pulse energy of 85 nJ and a pulsewidth of 8 ps. The seed laser was passively mode-locked by a semiconductor-saturable absorber mirror to generate average power 16 mW at a pulse repetition rate of 14.7 MHz in a linear cavity. A one-stage single-mode thulium-doped fiber amplifier was used directly to boost average power to 1.25 W. The laser center wavelength and the spectral bandwidth were 1963.5 and 0.7 nm, respectively, and the time-bandwidth product of the laser pulse was 0.44.
Keywords :
high-speed optical techniques; laser cavity resonators; laser mirrors; laser mode locking; optical fibre amplifiers; optical saturable absorption; power amplifiers; thulium; average power generation; energy 85 nJ; high-energy near transform-limited pulses; high-energy ultrafast thulium-doped all-fiber master oscillator power amplifier; laser center wavelength; laser pulsewidth; linear cavity; one-stage single-mode thulium-doped fiber amplifier; passively mode-locked; power 16 mW; pulse energy; pulse repetition rate; seed laser; semiconductor-saturable absorber mirror; spectral bandwidth; time-bandwidth product; ultrafast thulium-doped all-fiber MOPA; Fiber lasers; Laser mode locking; Optical fiber amplifiers; Optical fiber couplers; Optical fiber dispersion; Optical fiber polarization; Power amplifiers; Fiber amplifier; fiber laser; passively mode-locked; thulium-doped fiber;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2204870
