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TY - CONF AU - Xu, Y.L. AU - Doolittle, L.R. AU - Du, Q. AU - Galvanauskas, A. AU - Huang, G. AU - Huang, W.-H. AU - Leemans, W. AU - Li, D. AU - Tang, C.-X. AU - Wilcox, R.B. AU - Yan, L.X. AU - Yang, Y. AU - Zhou, T. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Phase Extraction and Stabilization for Coherent Pulse Stacking J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - Coherent pulse stacking (CPS) is a new time-domain coherent addition technique that stacks several optical pulses into a single output pulse, enabling high pulse energy and high average power. We model the CPS as a digital filter in the Z domain, and implement two deterministic algorithms extracting the cavity phase from limited data where only the pulse intensity is available. In a 2-stage 15-pulse CPS system, each optical cavity is stabilized at an individually-prescribed round-trip phase with 0.7 deg and 2.1 deg RMS phase errors for Stage 1 and Stage 2 respectively. Optical cavity phase control with nm accuracy ensures 1.2% intensity stability of the stacked pulse over 12 hours. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4895 EP - 4897 DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-THPML099 UR - http://jacow.org/ipac2018/papers/thpml099.pdf ER -