Focusing on flat optics : novel fabrication and design processes for high-efficiency silicon metasurfaces
Abstract/Contents
- Abstract
- Humanity has long been interested in the manipulation and management of electromagnetic waves, first in the form of refractive optics for visible light and more recently in diffractive optics and over a wider spectrum. The miniaturization of electronics has enabled the production of increasingly smaller patterned objects in a wide variety of materials, and optical device design has taken advantage of these advances. Optical metamaterials are novel thin-film diffractive devices that utilize carefully engineered arrays of subwavelength elements for light management. In this thesis, I discuss several aspects of my research aimed at addressing limitations of experimentally realized metasurface devices. I begin with an introduction to the history of optical devices and an exploration of design techniques for optical metasurfaces before focusing in more depth on my work on dielectric metasurfaces. I then examine the role that material selection plays in metasurface performance, and specifically how crystalline silicon has excellent properties to make efficient flat optical devices operating across the visible spectrum. Next, I explore the application of inverse-design topology-optimization based computational techniques to the design of free-space metasurfaces. This design methodology allows us to access non-intuitive, complex modal dynamics and produce highly efficient high-angle beam deflectors as well as multifunctional and broadband devices. Following this, I discuss work on diffractive optical components that utilize wavelength-scale features, defined by optical lithography, for beam management. Finally, I briefly describe our current efforts towards the design and fabrication of fully topology-optimized aperiodic, multilayer metasurface devices.
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 | 2018; ©2018 |
| Publication date | 2018; 2018 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Doshay, Sage Toko Garrett |
|---|---|
| Degree supervisor | Fan, Jonathan Albert |
| Degree supervisor | Miller, D. A. B |
| Thesis advisor | Fan, Jonathan Albert |
| Thesis advisor | Miller, D. A. B |
| Thesis advisor | Solgaard, Olav |
| Degree committee member | Solgaard, Olav |
| Associated with | Stanford University, Department of Applied Physics. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Sage Toko Garrett Doshay. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis Ph.D. Stanford University 2018. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2018 by Sage Toko Garrett Doshay
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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