Nanophotonics : near-field light propagation and optical force
Abstract/Contents
- Abstract
- Nanophotonics is the study of light at a nanometer to micrometer scale. In this thesis, I present my work on two sub-fields of nanophotonics: near-field light propagation and optical force. In the near-field limit, where the light's propagation distance is shorter than the wavelength of light, light propagation is not restricted by the macroscopic diffraction limit. As a result, field patterns with sub-wavelength feature size are allowed. I will show that it is possible to intuitively describe this system in wavevector space. I will also show that it is possible to enhance the field in this system by the use of an interface between a positive- and a negative-permittivity material. This field enhancement can be used to compensate the decay that is characteristic of near-field propagation in free-space. It also allows the system to be optimized for image-transfer purposes, where the goal is to have the image resembles the original input field. In optical force studies, the presence of light in optical systems can exert an electromagnetic force on an object. For example, two parallel waveguides with light propagating along them can experience a force that pushes or pulls the two waveguides. The force in this system allows us to design a non-volatile optical memory, which, unlike conventional optical memory, can maintain a state without the need of continuous input power. I will also study the force between a waveguide and a coupled resonator. I will show that there is a fundamental limit on the system, and show a more complicated setup where the limit is overcome. Finally, I study the existence of an optical equilibrium in the optical force in the waveguide-resonator system. I will show that optical equilibrium cannot be obtained in a single-resonance system and requires the interaction between two resonances.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2013 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Intaraprasonk, Varat |
|---|---|
| Associated with | Stanford University, Department of Applied Physics. |
| Primary advisor | Digonnet, Michel J. F |
| Primary advisor | Fan, Shanhui, 1972- |
| Thesis advisor | Digonnet, Michel J. F |
| Thesis advisor | Fan, Shanhui, 1972- |
| Thesis advisor | Miller, D. A. B |
| Advisor | Miller, D. A. B |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Varat Intaraprasonk. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2013. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2013 by Varat Intaraprasonk
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
Also listed in
Loading usage metrics...