Method of and apparatus for measuring the transverse moments of the electromagnetic field associated with an optical beam
CA 1214556 A · Owner: Otc - Optical Technologies Center S.R.L. · Inventors: Rossi, Umberto; Di Vita, Pietro; Coppa, Gianni
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The value of a transverse moment of any order of the electromagnetic field associated with an optical beam (and in particular the spot size of such a beam) is determined by two successive measurements of the optical power of the beam: one measurement is a direct measurement whilst the other is effected after spatially modulating the transverse distribution of the electromagnetic field by a factor proportional to the n-th power of the transverse coordinate of the beam, n being the moment order. The moment can be obtained from the ratio between the two measurements. The invention also includes apparatus for carrying out the method.
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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 November 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 2003.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.