title: Phase stabilization of spatiotemporally multiplexed ultrafast amplifiers.
abstract: Actively stabilized, simultaneous spatial and temporal coherent beam combination is a promising power-scaling technique for ultrafast laser systems. For a temporal combination based on optical delay lines, multiple stable states of operation arise for common stabilization techniques. A time resolved Jones' calculus is applied to investigate the issue. A mitigation strategy based on a temporally gated error signal acquisition is derived and demonstrated, enabling to stabilize laser systems with arbitrary numbers of amplifier channels and optical delay lines.
authors.forename: M
authors.initials: M
authors.lastname: Mueller
authors.forename: M
authors.initials: M
authors.lastname: Kienel
authors.forename: A
authors.initials: A
authors.lastname: Klenke
authors.forename: T
authors.initials: T
authors.lastname: Eidam
authors.forename: J
authors.initials: J
authors.lastname: Limpert
authors.forename: A
authors.initials: A
authors.lastname: Tünnermann