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Expired Canadian patentCanada

Continuous wave, frequency-doubled solid state laser systems with stabilized output

CA 1281402 C · Owner: Eye Research Institute Of The Retina Foundation · Inventors: Austin, William L.

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Abstract From the Canadian patent

A solid-state laser system for producing a frequency-doubled CW laser output beam having a stabilized output. The laser system includes within a threemirror resonator cavity, a Nd: YAG laser rod operating at an output wavelength of 1.064 um in the TEM transverse mode, and a KTP frequency-doubling crystal. At one end of the laser cavity the beam is reflected from a folding mirror through the frequency-doubling crystal to another reflecting mirror which reflects both the fundamental wavelength of the output beam from the laser rod, and also the doubled frequency beam at a wavelength of 0.532 um back through the frequency-doubling crystal onto the folding reflector. The folding reflector is …

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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

  • Granted March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 29, 1987
GrantedMarch 12, 1991
Term endedMarch 12, 2008
Patent numberCA 1281402 C
Classification (IPC)H01S3/04 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 29, 1987Patent grantedMarch 12, 1991Term endedMarch 12, 2008

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.