23 mJ high-power fiber CPA system using electro-optically controlled divided-pulse amplification.
Opt Lett
; 44(22): 5529-5532, 2019 Nov 15.
Article
em En
| MEDLINE
| ID: mdl-31730100
ABSTRACT
The pulse-energy scaling technique electro-optically controlled divided-pulse amplification is implemented in a high-power ultrafast fiber laser system based on coherent beam combination. A fiber-integrated front end and a multipass-cell-based back end allow for a small footprint and a modular implementation. Bursts of eight pulses are amplified parallel in up to 12 ytterbium-doped large-pitch fiber amplifiers. Subsequent spatiotemporal coherent combination of the 96 total amplified pulse replicas to a single pulse results in a pulse energy of 23 mJ at an average power of 674 W, compressible to a pulse duration of 235 fs. To the best of our knowledge, this is the highest pulse energy ever accomplished with a fiber chirped-pulse amplification (CPA) system.
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MEDLINE
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En
Ano de publicação:
2019
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Article