Paper
7 March 2019 Fibre Raman laser generated clusters of femtosecond pulses at 1270 nm
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Abstract
We demonstrate for the first time a fibre Raman laser delivering record-setting energy (60 nJ) of double-scale picofemtosecond pulses at wavelength of 1270 nm, which is of great interest in bio-medical applications. A Stokes wave was generated in single-stage Raman conversion of amplified radiation from a mode-locked F8 Yb-doped laser passing through a synchronously pumped phosphosilicate fibre ring cavity. The converted radiation at 1270 nm amounting to 47% of the total Raman laser output was maximised by tuning the repetition rate of the pulses generated in the Yb-doped master oscillator to the fundamental inter-mode spacing frequency of the phosphosilicate fibre cavity.
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Sergey Kobtsev, Aleksey Ivanenko, Alexey Kokhanovsky, Mikhail Gervaziev, and Sergey Smirnov "Fibre Raman laser generated clusters of femtosecond pulses at 1270 nm", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108972M (7 March 2019); https://doi.org/10.1117/12.2511026
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KEYWORDS
Raman spectroscopy

Fiber lasers

Femtosecond phenomena

Mode locking

Femtosecond fiber lasers

Optical fibers

Picosecond phenomena

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