Extraordinary power enhancement from nanoaperture vertical cavity surface emitting lasers for near-field applications
Abstract/Contents
- Abstract
- Near-field optical microscopy requires extremely high optical fields in proximity to the object being probed. The high optical field can be use to manipulate objects, make high definition inscriptions in the case of lithography, or to facilitate enzymatic reactions in biological systems. However, when light propagates through conventional circular or square shaped apertures, the power-throughput decays as the fourth power of the aperture size. A vast diversity of unconventionally-shaped apertures are presented. These C-, L-, and bowtie-shaped apertures exhibit extra-ordinary enhancement in both power transmission and near-field intensity that can be one million times greater than the conventional circular- or square-shaped apertures. They can also be iterated into a fractal-structure resulting in many interesting optical properties or can be further enhanced with plasmonic rings. Near-field scanning optical microscope (NSOM) images capable of sub-diffraction-limited resolution were confirmed by the optical near-field spot size. Furthermore, experiments using electron-energy loss spectroscopy (EELS) with sub-nanometer resolution revealed the near-field spot-size and the plasmon energy ranges of the nanoapertures. These unconventional apertures and arrays of apertures were incorporated into vertical cavity surface emitting lasers (VCSELs); this integrated near-field device demonstrated a power density of 50mW/[micrometers]2, five times larger than the power density required for high-density optical recording. Finally, a novel architecture that combines a VCSEL with an NSOM-like tip (VCSEL nanoscope) into an integrated device is presented. The VCSEL nanoscope can serve as a powerful device to manipulate and probe the nanoscale such as single molecule manipulation and detection, high throughput wafer defect detection and near-field coupling to waveguides for optical interconnects.
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 | Vo, Sonny |
|---|---|
| Associated with | Stanford University, Department of Applied Physics. |
| Primary advisor | Harris, J. S. (James Stewart), 1942- |
| Thesis advisor | Harris, J. S. (James Stewart), 1942- |
| Thesis advisor | Byer, R. L. (Robert L.), 1942- |
| Thesis advisor | Vuckovic, Jelena |
| Advisor | Byer, R. L. (Robert L.), 1942- |
| Advisor | Vuckovic, Jelena |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Sonny Vo. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2013. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2013 by Sonny Vo
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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