G - Physics – 02 – B
Patent
G - Physics
02
B
345/11, 356/93
G02B 1/00 (2006.01) G02F 1/377 (2006.01)
Patent
CA 1272304
20104-8249 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 is response to electro- magnetic radiation at the given frequency being incident on the device normally of the first and second layers (2 and 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 on layer (2) may be provided so that the said other layer (3) is sandwiched between the said one and further layers (2 and 2').
531226
Dobson Peter James
Fetherstonhaugh & Co.
Philips Electronics N.v.
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