Yb:YAG single-crystal fiber amplifiers for picosecond lasers using the divided pulse amplification technique | Zendy

Fabien Lesparre | Zendy; Jean Thomas Gomes | Zendy; Xavier Délen | Zendy; Igor Martial | Zendy; Julien Didierjean | Zendy; W. P. Pallmann | Zendy; Bojan Resan | Zendy; Frédéric Druon | Zendy; François Balembois | Zendy; Patrick Georges | Zendy

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Yb:YAG single-crystal fiber amplifiers for picosecond lasers using the divided pulse amplification technique

Author(s) -

Fabien Lesparre,

Jean Thomas Gomes,

Xavier Délen,

Igor Martial,

Julien Didierjean,

W. P. Pallmann,

Bojan Resan,

Frédéric Druon,

François Balembois,

Patrick Georges

Publication year - 2016

Publication title -

optics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.524

H-Index - 272

eISSN - 1071-2763

pISSN - 0146-9592

DOI - 10.1364/ol.41.001628

Subject(s) - materials science , amplifier , optics , picosecond , laser , pulse (music) , fiber laser , pulse duration , optoelectronics , optical amplifier , physics , cmos , detector

A two-stage master-oscillator power-amplifier (MOPA) system based on Yb:YAG single-crystal-fiber (SCF) technology and designed for high peak power is studied to significantly increase the pulse energy of a low-power picosecond laser. The first SCF amplifier has been designed for high gain. Using a gain medium optimized in terms of doping concentration and length, an optical gain of 32 dB has been demonstrated. The second amplifier stage designed for high energy using the divided pulse technique allows us to generate a recombined output pulse energy of 2 mJ at 12.5 kHz with a pulse duration of 6 ps corresponding to a peak power of 320 MW. Average powers ranging from 25 to 55 W with repetition rates varying from 12.5 to 500 kHz have been demonstrated.

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