Manipulating light with nanostructured metals
Abstract/Contents
- Abstract
- Plasmonics has emerged as a technology that enables the creation of a wide range of miniaturized photonic devices. Nanostructured metals provide numerous new opportunities for manipulating light at a deep-subwavelength scale. This dissertation covers our work on exploiting nanostructured metals to create new and improved optical functionality. We provided the first experimental demonstration of far-field lensing using an aperiodic plasmonic slit array. This approach offers large design freedom, since these structures derive their behavior from local geometry. We illustrated this flexibility through simulations of efficient and compact planar nanoslit lenses that compensate for various angles of incidence. We further demonstrated the ability to perform phase front design in two dimensions by varying the local geometry in metallic nanoscale pillar arrays. We also considered aperiodic arrays of coupled metallic waveguides and numerically demonstrated that, for an incident plane wave, a focus of as small as one-hundredth of a wavelength can be achieved for a focal distance that is much longer than the wavelength. Moreover, the focusing behavior can be controlled by changing either the incident wavelength or the angle of incidence. We showed that this behavior can be understood using Hamiltonian optics ray tracing. Lastly, we developed the coupled-mode theory for resonant apertures. Such apertures are of fundamental interest, and form the basic building blocks for many applications in subwavelength optics and optoelectronics. We showed that the maximum transmission and absorption cross sections for subwavelength resonant apertures are only related to the wavelength of the incident light and the directivity of the aperture's radiation pattern and explained the spectral behavior of structures that support multiple resonances.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2011 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Verslegers, Lieven B. P |
|---|---|
| Associated with | Stanford University, Department of Electrical Engineering |
| Primary advisor | Fan, Shanhui, 1972- |
| Thesis advisor | Fan, Shanhui, 1972- |
| Thesis advisor | Brongersma, Mark L |
| Thesis advisor | Miller, D. A. B |
| Advisor | Brongersma, Mark L |
| Advisor | Miller, D. A. B |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Lieven Verslegers. |
|---|---|
| Note | Submitted to the Department of Electrical Engineering. |
| Thesis | Ph. D. Stanford University 2011 |
| Location | electronic resource |
Access conditions
- Copyright
- © 2011 by Lieven B. P. Verslegers
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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