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Abstract:
We report a 120 W high average power all-fiber subnanosecond master oscillator power amplifier (MOPA) system with a two-stage amplifier chain. The seed source is an ytterbium-doped single mode fiber laser passively mode-locked by nonlinear polarization rotation (NPR). Its pulse width is tunable from 0.59 ns to 1.2 ns by changing the length of the laser cavity. The average output power of 91.5 mW is obtained at 26.3 MHz with pulse width of 0.59 ns. A large mode area double cladding high-absorption ytterbium-doped fiber is introduced into the master power amplifier to suppress the nonlinear effects. Finally, 120 W average output power is obtained with single pulse energy of 4.56 mu J, and its optical-to-optical conversion efficiency is up to 83.9%. In addition, we demonstrate 19.5 W average-power supercontinuum generation in photonic crystal fiber (PCF) using this subnanosecond pulsed fiber amplifier.
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LASER PHYSICS
ISSN: 1054-660X
Year: 2014
Issue: 8
Volume: 24
1 . 2 0 0
JCR@2022
ESI Discipline: PHYSICS;
ESI HC Threshold:202
JCR Journal Grade:3
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 7
SCOPUS Cited Count: 11
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 0