Pulse destacking and restacking for coherent combination of amplified pulses using spatial offset and intensity splitting

Kevin F. Lee; Martin E. Fermann

doi:10.1117/12.2508538

7 March 2019 Pulse destacking and restacking for coherent combination of amplified pulses using spatial offset and intensity splitting

Kevin F. Lee, Martin E. Fermann

Author Affiliations +

Proceedings Volume 10897, Fiber Lasers XVI: Technology and Systems; 108971C (2019) https://doi.org/10.1117/12.2508538
Event: SPIE LASE, 2019, San Francisco, California, United States

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.

Citation Download Citation

Kevin F. Lee and Martin E. Fermann "Pulse destacking and restacking for coherent combination of amplified pulses using spatial offset and intensity splitting", Proc. SPIE 10897, Fiber Lasers XVI: Technology and Systems, 108971C (7 March 2019); https://doi.org/10.1117/12.2508538

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