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Title: On-Chip Laser-Power Delivery System for Dielectric Laser Accelerators

Journal Article · · Physical Review Applied
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  1. Stanford Univ., CA (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Purdue Univ., West Lafayette, IN (United States)
+ Show Author Affiliations

We propose an on-chip optical-power delivery system for dielectric laser accelerators based on a fractal “tree-network” dielectric waveguide geometry. Here, this system replaces experimentally demanding free-space manipulations of the driving laser beam with chip-integrated techniques based on precise nanofabrication, enabling access to orders-of-magnitude increases in the interaction length and total energy gain for these miniature accelerators. Based on computational modeling, in the relativistic regime, our laser delivery system is estimated to provide 21 keV of energy gain over an acceleration length of 192 μm with a single laser input, corresponding to a 108-MV/m acceleration gradient. The system may achieve 1 MeV of energy gain over a distance of less than 1 cm by sequentially illuminating 49 identical structures. These findings are verified by detailed numerical simulation and modeling of the subcomponents, and we provide a discussion of the main constraints, challenges, and relevant parameters with regard to on-chip laser coupling for dielectric laser accelerators.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
Gordon and Betty Moore Foundation; USDOE
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1458469
Journal Information:
Physical Review Applied, Journal Name: Physical Review Applied Journal Issue: 5 Vol. 9; ISSN 2331-7019; ISSN PRAHB2
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (11)

High-field nonlinear optical response and phase control in a dielectric laser accelerator journal August 2018
Grating-based waveguides for dielectric laser acceleration journal September 2018
Laser-Driven Electron Lensing in Silicon Microstructures journal March 2019
On-chip integrated laser-driven particle accelerator journal January 2020
Design of a tapered slot waveguide dielectric laser accelerator for sub-relativistic electrons conference January 2019
Design of a tapered slot waveguide dielectric laser accelerator for sub-relativistic electrons journal January 2018
Enhanced energy gain in a dielectric laser accelerator using a tilted pulse front laser journal January 2018
Silicon nitride waveguide as a power delivery component for on-chip dielectric laser accelerators journal January 2019
Enhanced energy gain in a dielectric laser accelerator using a tilted pulse front laser text January 2018
Laser-Driven Electron Lensing in Silicon Microstructures text January 2019
On-chip integrated laser-driven particle accelerator text January 2019

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