Schedule 0 4:00 PM - 4:15 PM [ALPS11-02] Ultrafast electron emission from a grating structure assisted by propagating surface plasmons using mid-IR fields *Tomoya Mizuno1, Kengo Takeuchi1, Keisuke Kaneshima1, Nobuhisa Ishii1, Teruto Kanai1, Jiro Itatani1 (1. The University of Tokyo)