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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Welsh, G.H. Hunt, N.T. Wynne, K. |
| Copyright Year | 2007 |
| Description | Author affiliation: Dept. of Phys., Univ. of Strathclyde, Glasgow (Welsh, G.H.; Hunt, N.T.; Wynne, K.) |
| Abstract | Metallic nanostructures have been prepared by depositing thin layers of gold onto a fused-silica transmission grating. Excitation with 800-nm femtosecond laser pulses in air results in the emission of terahertz radiation with an angle-dependent efficiency and a third-order dependence on input power. Nanostructures consisting of metal nano-pyramids on glass as well as silver nano-pyramid arrays covered in gold also exhibit terahertz emission. We will show that the source of the terahertz radiation in all of these cases is surface-plasmon- assisted multiphoton ionisation and ponderomotive acceleration in the evanescent laser field. |
| Starting Page | 901 |
| Ending Page | 902 |
| File Size | 647694 |
| Page Count | 2 |
| File Format | |
| ISBN | 9781424414383 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-09-02 |
| Publisher Place | UK |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronic Engineers, Inc. |
| Subject Keyword | Laser excitation Surface emitting lasers Plasmons Gratings Pulsed laser deposition Nanostructures Gold Power lasers Optical pulses Glass Electron Emission Terahertz pulse generation Surface Waves |
| Content Type | Text |
| Resource Type | Article |
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