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  4. A high-peak power nanosecond all-fiber MOPA system at high-repetition rate
 
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A high-peak power nanosecond all-fiber MOPA system at high-repetition rate

Journal
Proceedings of SPIE - The International Society for Optical Engineering
Journal Volume
8601
Date Issued
2013
Author(s)
Chang, C.-L.
Lai, P.-Y.
Li, Y.-Y.
Chen, S.-H.
SHENG-LUNG HUANG  
DOI
10.1117/12.2000617
URI
http://www.scopus.com/inward/record.url?eid=2-s2.0-84878184578&partnerID=MN8TOARS
http://scholars.lib.ntu.edu.tw/handle/123456789/379928
Abstract
By limiting the core diameter of 15 μm at maximum with NA=0.07±0.01 for the near-diffraction-limited output (V <3.6), we successfully generate the pulse with the peak power of 36 kW and the duration of 4.6 ns in FWHM at the repetition rate of 20 kHz. To the best of our knowledge, the signal pulse energy corresponding to 264 μJ is the highest to date in the diode-seeded 15-μm all-fiber MOPA system with the efficiency of 35%. The success in the energy/power scaling is attributed to the further raise of input energy for more extracted energy, the tradeoff between the Raman-limited signal energy and the amplifier slope efficiency for more signal energy ratio, and the proper adjustment of both pump wavelength and power for avoiding coat damage without forced cooling. © 2013 Copyright SPIE.
Subjects
energy/power scaling; fiber laser amplifiers; Master oscillator power amplification; stimulated Raman scattering; ytterbium-doped
SDGs

[SDGs]SDG7

Other Subjects
energy/power scaling; Extracted energies; High peak power; High repetition rate; Laser amplifiers; Power amplification; Slope efficiencies; Ytterbium-doped; Fiber lasers; Stimulated Raman scattering; Energy efficiency
Type
conference paper

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