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High-energy chirped- and divided-pulse Sagnac femtosecond fiber amplifier

Abstract : We report on the generation of 1.1-mJ, 300-fs pulses at 50 kHz by implementing an amplifier architecture whereby four stretched pulse replicas are created in the temporal and spatial domains, allowing pulse energy scaling by the same factor. The whole spatiotemporal coherent combining geometry is passive, avoiding the need for active electronic stabilization loop systems. The combining efficiency remains above 90% at all power levels.
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Submitted on : Thursday, May 12, 2016 - 3:33:19 PM
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Florent Guichard, Yoann Zaouter, Marc Hanna, Khanh-Linh Mai, Franck Morin, et al.. High-energy chirped- and divided-pulse Sagnac femtosecond fiber amplifier. Optics Letters, Optical Society of America, 2015, 40 (1), pp.89. ⟨10.1364/OL.40.000089⟩. ⟨hal-01120352⟩

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