Submillimeter wave inverse smith-purcell effect

Abstract

We have observed the inverse Smith-Purcell (ISP) effect for the first time by using a submillimeter wave laser as a driving source. The ISP effect is one of the candidates for laser-driven linacs with a metallic grating as an interaction circuit to produce acceleration gradient of a few GeV/m. In this paper, we describe our experimental apparatus including newly developed CO2 laser and the first experimental evidence of this effect.