Design and demonstration of on-chip integrated laser-driven particle accelerators
Abstract/Contents
- Abstract
- In this thesis, I present the first demonstration of a waveguide-integrated dielectric laser accelerators (DLA), designed using a photonic inverse design approach. I first review the operation of DLAs and describe how one can formulate a figure-of-merit for the optimization of these structures. I then briefly introduce the inverse design framework that allows for efficient free-form optimization of these structures, enabling search of a design-space that goes far beyond that of the tuning of a few geometric parameters. With an integrated accelerator design obtained, attention is turned to on-chip coupling methods for DLA applications. Here again, the inverse design framework is employed to produce broadband grating couplers. Experimental results of our single-stage on-chip integrated accelerator are shown, from which a maximum energy gain of 0.915 keV over 30 um, corresponding to an acceleration gradient of 30.5 MeV/m is inferred. Lastly, I explore new directions to reach higher on-chip acceleration gradients and larger energy-gain, including utilizing foundry fabrication for multi-stage accelerators
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2020; ©2020 |
| Publication date | 2020; 2020 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Sapra, Neeraj Vipin |
|---|---|
| Degree supervisor | Hollberg, Leo (Leo William) |
| Degree supervisor | Vuckovic, Jelena |
| Thesis advisor | Hollberg, Leo (Leo William) |
| Thesis advisor | Vuckovic, Jelena |
| Thesis advisor | Byer, R. L. (Robert L.), 1942- |
| Degree committee member | Byer, R. L. (Robert L.), 1942- |
| Associated with | Stanford University, Department of Physics. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Neeraj V. Sapra |
|---|---|
| Note | Submitted to the Department of Physics |
| Thesis | Thesis Ph.D. Stanford University 2020 |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by Neeraj Vipin Sapra
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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