Interferometer design and controls for pulse stacking in high power fiber lasers

• DOI: 10.1063/1.4975922
• Publication Date: 2017-03-07T13:00:24Z
• Authors: Russell Wilcox; Yawei Yang; Dar Dahlen; Yilun Xu; Gang Huang; Du Qiang; Lawrence Doolittle; John Byrd; Wim Leemans; John Ruppe; Tong Zhou; Morteza Sheikhsofla; John Nees; Almantas Galvanau...; Jay Dawson; Diana Chen; Paul Pax
• Keywords: 0103 physical sciences; 01 natural sciences

In order to develop a design for laser-plasma accelerator (LPA) driver, we demonstrate key technologies that enable fiber lasers produce high energy, ultrafast pulses. These must be scalable, and operate in the presence of thermal drift, acoustic noise, other perturbations typical an operating system. We show coherent pulse stacking (CPS), which requires optical interferometers, can made robust by image-relaying, multipass cavities, phase control schemes sense train amplitudes from each cavity. A four-stage system using image-relaying cavities is controlled 14 hours pulse-pattern sensing algorithm. For addition simultaneous pulses, introduce new scheme diffractive optics, experimentally four pulses added while preserving width 128 fs.