Proposal for a Solar-Laser-Driven Vehicle

Abstract

We propose an automobile engine driven by water-laser coupling without fuel. The automobile can load a solarpumped fiber laser or can be driven by ground-based lasers. The vehicle will be useful on other planets because the piston is in a closed system and the water will not be exhausted into a vacuum. In the preliminary experiment, we succeeded in driving a cylindrical piston of 0.2 g on top of water placed inside an acrylic pipe of 8 mm in inner diameter.