Pulsed kW-peak power and integrated all fiber MOPA single-frequency source at 2050nm

Erik M. D. Lucas; Guillaume Canat; Laurent Lombard; Yves Jaouën; Sylvain Bordais

doi:10.1117/12.2052284

1 May 2014 Pulsed kW-peak power and integrated all fiber MOPA single-frequency source at 2050nm

Erik M. D. Lucas, Guillaume Canat, Laurent Lombard, Yves Jaouën, Sylvain Bordais

Proceedings Volume 9135, Laser Sources and Applications II; 91350M (2014) https://doi.org/10.1117/12.2052284
Event: SPIE Photonics Europe, 2014, Brussels, Belgium

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 Tm³⁺ highly doped silica fiber is estimated to 1.2x10^-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.

Citation Download Citation

Erik M. D. Lucas, Guillaume Canat, Laurent Lombard, Yves Jaouën, and Sylvain Bordais "Pulsed kW-peak power and integrated all fiber MOPA single-frequency source at 2050nm", Proc. SPIE 9135, Laser Sources and Applications II, 91350M (1 May 2014); https://doi.org/10.1117/12.2052284

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