# Reconfigurable Photonic Circuit for Controlled Power Delivery to Laser-Driven Accelerators on a Chip

## TL;DR

This paper introduces a reconfigurable integrated optical system with a Mach-Zehnder interferometer mesh to control laser power distribution in dielectric laser accelerators, enabling scalable and efficient on-chip particle acceleration.

## Contribution

It presents a novel reconfigurable optical mesh for power control in dielectric laser accelerators, addressing the need for automatic tuning and scalability.

## Key findings

- Efficient power distribution achieved through the interferometer mesh.
- Favorable scaling properties with increasing mesh size.
- Potential for improved control in chip-scale laser-driven accelerators.

## Abstract

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.