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Phase stabilization of spatiotemporally multiplexed ultrafast amplifiers

: Mueller, M.; Kienel, M.; Klenke, A.; Eidam, T.; Limpert, J.; Tünnermann, A.

Volltext ()

Optics Express 24 (2016), Nr.8, S.7893-7904
ISSN: 1094-4087
Bundesministerium für Bildung und Forschung BMBF
13N13167; MEDUSA
European Commission EC
Advanced Coherent Ultrafast Laser Pulse Stacking
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IOF ()

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.