Smith-Purcell radiation source using negative-index metamaterial (NIM)
US7397055B2 · kind B2 · utility
4Cited by
2References
19Claims
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Key dates
| Filing date | May 2, 2005 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | May 13, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0903
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The Smith Purcell effect, in which a beam of electrons passes close to a conducting grating and induces electromagnetic radiation from the grating surface, can be used as a source of THz radiation. A grating composed of negative index metamaterial (NIM) enhances the output of the Smith Purcell source. Of particular interest is the use of a NIM grating in a Smith-Purcell source to provide a tunable coherent CW source of terahertz (THz) radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.