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:
May. 04, 1982
Filed:
Apr. 03, 1980
Toshiaki Masumoto, Tokyo, JP;
Yasuhiko Kuwano, Tokyo, JP;
Nippon Electric Co., Ltd., Tokyo, JP;
Abstract
Iron is close to a major surface layer of a yttrium aluminate laser rod so that the layer portion may have a filtering effect. The absorption factor for the short wavelength light of this layer portion depends upon the concentration c (weight percent) of the contained iron and the thickness t (.mu.m) of the iron-containing layer. Consequently, the effect of the iron in the laser rod can be evaluated as a function of the product c.times.t (wt%..mu.m) of the concentration c and the thickness t. In the range of the product c.times.t of 1<c.t<2.times.10.sup.2, a laser output could be obtained which is higher than that of the conventional laser rod not containing iron jointly with a short wavelength light filter. The thickness of the iron-containing layer is 1/4 or less of the radius of the laser rod.