The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 1983
Filed:
Mar. 23, 1982
Herb J Seguin, Edmonton, CA;
Majestic Contractors Limited, Edmonton, CA;
Abstract
There is provided a method and apparatus for determining the power output of a laser for wavelengths which are substantially fully absorbed by water, such as the wavelengths produced by carbon dioxide lasers. A rotary member defines a surface of revolution which widens away from an opening to a free edge, with the opening being located substantially at the axis of the surface. Means are provided for rotating a member about its axis, and water is brought to the surface through the opening, to form a film running to the free edge. Means are provided for collecting water at the free edge, and the water through-put is measured by suitable means. Further means are provided for measuring the water temperature differential arising due to absorbable radiation falling upon the water as it runs over the surface, and on the basis of the throughput and the temperature differential, the absorbed power, and hence the output of the laser in the wavelength region in question, can be calculated. For CO.sub.2 lasers substantially all of the radiation is in the region which is fully absorbed by water, and thus the apparatus and method provided herein are ideal for measuring the power output of lasers of this kind.