Suppression of mode-beating noise in a q-switched pulsed laser using novel q-switch device
CA 2459841 C · Owner: Gendron, Denis J. · Inventors: Gendron, Denis J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel Q-switch device enables significant quality and value improvement for a Q-switched laser system by achieving a significant reduction of mode-beating noise during the pulsed output. The origin of mode-beating noise in a Q-switched laser is a result of high gain availability and amplification of competing standing-waves in formation; whose optical frequency is a product of natural selection via spatial hole burning in the gain medium. The novel Q-switch device employs an active electro-optics or acousto-optics, Q- switch in combination with a saturable absorber device to provide an optimized soft opening of the optical path and a controlled timing of a Q-switched laser. This novel …
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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 5, 2004 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2026.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.