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9 March 2023 All-fiber integrated 85um core chirally-coupled core fiber high energy amplifiers for compact coherently combined laser arrays
Mingshu Chen, Alexander Rainville, Manoj Kanskar, Jim Zhang, Ossi Kimmelma, Arto Nieminen, Donald Sipes, Brian Schulz, Carson Shollenbarger, Tong Zhou, Russell Wilcox, Almantas Galvanauskas
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Proceedings Volume 12400, Fiber Lasers XX: Technology and Systems; 124000I (2023) https://doi.org/10.1117/12.2650915
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
We report development of 85µm core Yb-doped and Ge-doped chirally-coupled-core (CCC) fibers, and their integration via fusion-splicing into an all-fiber optical amplifier system. This system, consisting of a CCC fiber amplifier and a 6+1 fusion-spliced signal-pump-combiner with a passive CCC fiber feed-through produces robust single mode output (diffraction-limited) in a counter-pumped configuration with passive-fiber leads as short as ~30cm. The Yb-doped 85µm core CCC fiber amplifiers had produced ~10mJ energy pulses at close to ~100W of average power. This achieved performance and monolithic all-fiber integration are required for compact and robust coherently-combined laser array drivers of laser plasma accelerators.
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Mingshu Chen, Alexander Rainville, Manoj Kanskar, Jim Zhang, Ossi Kimmelma, Arto Nieminen, Donald Sipes, Brian Schulz, Carson Shollenbarger, Tong Zhou, Russell Wilcox, and Almantas Galvanauskas "All-fiber integrated 85um core chirally-coupled core fiber high energy amplifiers for compact coherently combined laser arrays", Proc. SPIE 12400, Fiber Lasers XX: Technology and Systems, 124000I (9 March 2023); https://doi.org/10.1117/12.2650915
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KEYWORDS
Current controlled current source
Fiber amplifiers
Fiber lasers
Optical amplifiers
Plasma
Plasma generation
Prototyping
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