@inproceedings{6eb67ba6bb834e7a93d81fdca45d8980,
title = "Pulsed kW-peak power and integrated all fiber MOPA single-frequency source at 2050nm",
abstract = "We report a high power, single frequency, linearly polarized master oscillator power amplifier emitting 110 ns, 1 kW peak power pulses at 2050 nm. A 20\% slope efficiency and a beam quality of M2 = 1.2 are achieved with a three stages double clad Tm3+-doped fiber architecture. Various pump schemes are compared leading to the conclusion that 793 nm pump wavelength is the most efficient for amplification at 2050 nm. Based on a numerical simulations, the Brillouin gain coefficient around 2 μm in Tm 3+ highly doped silica fiber is estimated to 1.2{\texttimes}10-11 m/W. Output peak power is limited by Stimulated Brillouin scattering to 535 W without mitigation and to 1 kW with application of a strain distribution along the doped fiber.",
keywords = "2 μm, High power, MOPA, Pulsed amplifier, SBS, Single-frequency, Thulium doped fiber laser",
author = "Lucas, \{Erik M.D.\} and Guillaume Canat and Laurent Lombard and Yves Jaou{\"e}n and Sylvain Bordais",
year = "2014",
month = jan,
day = "1",
doi = "10.1117/12.2052284",
language = "English",
isbn = "9781628410839",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
booktitle = "Laser Sources and Applications II",
note = "Laser Sources and Applications II ; Conference date: 14-04-2014 Through 17-04-2014",
}