Method and apparatus for providing a coherent terahertz source
CA 2397678 A1 · Owner: Barnes, Norman P. · Inventors: Barnes, Norman P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coherent optical source, having a center frequency in the terahertz band can be generated. Two coherent optical sources (15 20) of different frequencies , can be mixed in a nonlinear crystal (50) to generate an optical source having a third distinct frequency in the terahertz frequency range. The third frequency, an idler frequency, equals the difference between pump and signal wave frequencies incident on the crystal. The pump and signal wave frequencies are selected so that their frequency difference is in the terahertz range and so that the interaction between the pump signal, and idler wave frequencies , is phase matched using a cross-Reststrahlen band dispersion-compensated …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed January 13, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 13, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2022.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.