DocumentCode
39444
Title
All-Fiber-Integrated Narrowband Nanosecond Pulsed Tm-Doped Fiber MOPA
Author
Xiong Wang ; Xiaoxi Jin ; Pu Zhou ; Xiaolin Wang ; Hu Xiao ; Zejin Liu
Author_Institution
Coll. of Optoelectron. Sci. & Eng., Nat. Univ. of Defense Technol., Changsha, China
Volume
27
Issue
14
fYear
2015
fDate
July15, 15 2015
Firstpage
1473
Lastpage
1476
Abstract
We present a high average power narrowband-pulsed fiber master oscillator power amplifier (MOPA) at 1.971 μm. The linewidth of the pulse trains is broadened to ~1.5 GHz via phase modulation. The repetition rates are 3 and 5 MHz, respectively. The output power of pulse train with 3 MHz repetition rate is 192 W, and the pulsewidth is 51 ns, corresponding to a peak power of 1.11 kW and a pulse energy of 62 μJ. The output power of pulse train with 5 MHz repetition rate is 209 W, and the pulsewidth is 46 ns, corresponding to a peak power of 0.86 kW and a pulse energy of 42 μJ. Higher output power can be achieved by narrowing the pulsewidth to several nanoseconds. To the best of our knowledge, this is the first demonstration on high-power narrowband nanosecondpulsed MOPA near 2 μm with an average power exceeding 200 W.
Keywords
optical fibre amplifiers; optical modulation; phase modulation; power amplifiers; spectral line narrowing; thulium; all-fiber-integrated narrowband nanosecond pulsed Tm-doped fiber MOPA; energy 62 muJ; frequency 1.5 GHz; high average power narrowband-pulsed fiber master oscillator power amplifier; high-power narrowband nanosecond-pulsed MOPA; phase modulation; power 0.86 kW; power 1.11 kW; power 192 W; power 209 W; pulse energy; pulse train linewidth; pulsewidth narrowing; wavelength 1.971 mum; Fiber lasers; Optical fiber amplifiers; Optical fiber polarization; Optimized production technology; Power amplifiers; Power generation; Scattering; Infrared and far-infrared lasers; laser amplifiers; pulsed lasers;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2015.2425892
Filename
7093142
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