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Pulse destacking and restacking for coherent combination of amplified pulses using spatial offset and intensity splitting
Author(s): Kevin F. Lee; Martin E. Fermann
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Paper Abstract

We show a new interferometer for coherently combining multiple pulses from multiple amplifiers for femtosecond, high energy pulses. A double pass provides passive interferometer stability, but we add a spatial offset to enable unidirectional amplification in fiber. Using intensity splitters and phase results in high spectral bandwidth and low dispersion. We demonstrate direct combination of eight 81 fs pulses made by nonlinear amplification, broadening, and compression within two separate fiber amplifiers with only one active stabilization for the relative fiber amplifier lengths. We verify coherence of the input and output pulses for frequency comb applications.

Paper Details

Date Published: 7 March 2019
PDF: 6 pages
Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108971C (7 March 2019); doi: 10.1117/12.2508538
Show Author Affiliations
Kevin F. Lee, IMRA America, Inc. (United States)
Martin E. Fermann, IMRA America, Inc. (United States)

Published in SPIE Proceedings Vol. 10897:
Fiber Lasers XVI: Technology and Systems
Adrian L. Carter; Liang Dong, Editor(s)

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