High efficiency intracavity doubled laser and method
CA 2320839 C · Owner: Uniphase Corporation · Inventors: Mackinnon, Neil; Xie, Ping
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intracavity doubled single longitudinal mode laser is disclosed which provides stable (i.e. low amplitude variation in its output beam intensity) efficient operation. An associated method is also disclosed. A lasant material (36) is positioned in the cavity for producing light at a desired fundamental wavelength and possibly other, unwanted wavelengths. Polarizing means (38) and a type I doubling material (36) are also positioned in the cavity. During operation of the laser, the polarizing means polarizes the desired fundamental wavelength as well as the unwanted wavelengths of light produced by the lasant material. The type I doubling material then produces output wavelengths at …
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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 September 10, 1998 and granted July 23, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.