Dielectric laser acceleration (DLA) represents a promising approach to building miniature particle accelerators on a chip. However, similar to conventional RF accelerators, an automatic and reconfigurable control mechanism is needed to scale DLA technology towards high energy gains and practical applications. We present a system providing control of the laser coupling to DLA using integrated optics and introduce a novel component for power distribution using a reconfigurable mesh of Mach-Zehnder interferometers. We show how such a mesh may be sequentially and efficiently tuned to optimize power distribution in the circuit and find that this strategy has favorable scaling properties with respect to size of the mesh.
@article{arxiv.1902.09731,
title = {Reconfigurable Photonic Circuit for Controlled Power Delivery to Laser-Driven Accelerators on a Chip},
author = {Tyler W. Hughes and R. Joel England and Shanhui Fan},
journal= {arXiv preprint arXiv:1902.09731},
year = {2019}
}