M. Mueller,
M. Kienel,
A. Klenke,
T. Eidam,
J. Limpert,
and A. Tünnermann
Phase stabilization of spatiotemporally multiplexed ultrafast amplifiers
Opt. Express, 24 :7893 (April 2016)
Phase stabilization of spatiotemporally multiplexed ultrafast amplifiers
Opt. Express, 24 :7893 (April 2016)
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.