High power diode pumped laser
CA 2013388 C · Owner: Lai, Shui T. · Inventors: Lai, Shui T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A single cavity laser device comprises a diode pumped laser medium having a relatively high gain but a relatively low power. With this medium, a control laser beam is generated. Also positioned in the cavity is a second laser medium having a relatively large gain volume which is pumped by an array of laser diodes at a relatively low gain to created a reservoir of excited state ions. Positioned between these two diode pumped laser mediums is a beam expander which focuses the control laser beam onto the second laser medium to substantially fill the gain volume of the second laser medium. Stimulation of the excited ions in the gain volume of the second laser medium by photons in the control …
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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 March 28, 1990 and granted October 26, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 28, 2012.
- 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
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.