Diode laser-pumped and linear cavity laser systems for ultra-sensitive gas detection via intracavity laser spectroscopy (ils)
CA 2203775 C · Owner: Wolperdinger, Markus · Inventors: Kalisky, Yehoshua; Wolperdinger, Markus; Atkinson, George H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Contaminants are detected at concentrations below 1 part-per-million and extending to a level approaching 1 part-per-trillion by using intracavity laser spectroscopy (ILS) techniques. An optically-pumped solid-state (ILS laser) (500) is employed as a detector. The ILS laser (500) comprises an iondoped crystal (507) in a laser cavity (902) optically pumped by a pumping source (100). A gas sample containing gaseous contaminant species is placed inside the laser cavity (902) on one side of crystal (507). The ILS laser output signal is detected and analyzed to identify the gaseous species (via its spectral signature). Gaseous species concentration can also be determined from the …
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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 August 29, 1996 and granted July 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 29, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 29, 2018.
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