Compression of femtosecond ytterbium fibre laser pulses using nonlinear processes in silica fibre

The temporal compression of 100-fs nanojoule laser pulses using nonlinear processes in silica fibre has been studied by numerical simulation and experimentally. The simulation results demonstrate that, in the case of spectral broadening in a normal dispersion fibre, followed by the temporal compress...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2018-05, Vol.48 (5), p.476-480
Main Authors: Didenko, N.V., Konyashchenko, A.V., Losev, L.L., Tausenev, A.V., Tenyakov, S.Yu
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Computer simulation
COMPUTERIZED SIMULATION
Dispersion
Femtosecond pulses
Fiber lasers
LASERS
LINE BROADENING
OPTICAL FIBERS
Pulse duration
PULSES
self-phase modulation
SILICA
silica fibre
Silicon dioxide
temporal compression
YTTERBIUM
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Summary:The temporal compression of 100-fs nanojoule laser pulses using nonlinear processes in silica fibre has been studied by numerical simulation and experimentally. The simulation results demonstrate that, in the case of spectral broadening in a normal dispersion fibre, followed by the temporal compression of the pulse in a compressor with a negative second-order dispersion, up to 90 % of the compressed pulse energy can be concentrated in the main peak, whose duration is a factor of 8 shorter than the initial laser pulse duration. In our experiments, 100-fs ytterbium fibre laser pulses have been compressed to pulses with an ∼13-fs main peak accounting for 87 % of the compressed pulse energy. At an average ytterbium laser output power of 4.2 W, the average power at the compressor output has been 3.1 W.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16669