Simple and robust generation of ultrafast laser pulse trains using polarization-independent parallel-aligned thin films

摘要

Highlights?A novel design of ultrafast temporal shaping device is proposed.?The mechanism relies on multi-reflections within the splitting films.?Pulse trains with controllable temporal profile can be generated flexibly.?It has advantages of compact structure, low cost, and high damage threshold.?It with high potential for broad utilizations in ultrafast applications.AbstractUltrafast laser pulse temporal shaping has been widely applied in various important applications such as laser materials processing, coherent control of chemical reactions, and ultrafast imaging. However, temporal pulse shaping has been limited to only-in-lab technique due to the high cost, low damage threshold, and polarization dependence. Herein we propose a novel design of ultrafast laser pulse train generation device, which consists of mul