Device and method for doubling the frequency of elecromagnetic radiation of a given frequency
US4867510A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1989 |
| Grant date | Sep 19, 1989 |
| Priority date | — |
| Expiry date | Mar 16, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/377
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device and method for doubling the frequency of electromagnetic radiation of a given frequency are described. The device comprises a substrate (1) on which is provided a first layer (2) and a second layer (3). One of the first and second layers (2) has a plasma oscillation frequency equal to the given frequency for causing an electric field at twice the given frequency to be produced across the device in response to electromagentic radiation at the given frequency being incident on the device normally of the first and second layers (2and 3). A thus-produced electric field is converted to electromagnetic radiation at twice the given frequency by the said other of the first and second layers (3) which forms a waveguide for electromagnetic radiation at twice the given frequency. A further layer (2') similar to the said one layer (2) may be provided so that the said other layer (3) is sandwiched between the said one and further layers (2 and 2').
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.