Q-switched solid state pulsed laser with injection seeding and a gaussian output coupling mirror
CA 2007498 C · Owner: Hoya Photonics,Inc. · Inventors: Caprara, Andrea L.; Heritier, Jean-Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Q-switched pulsed laser resonant cavity having an output coupling mirror with a radially variable reflectivity function across its surface and a magnification level that combine to provide a very high discrimination against transverse modes of oscillation higher than a desired fundamental mode. This resonant cavity is especially adapted for use with injection seeding to limit the longitudinal modes of oscillation to one mode. The cavity arrangement develops a high powered light pulsed beam at its output that also has a uniform intensity profile.
Read the whole patent
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 10, 1990 and granted August 16, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 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.