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:
Apr. 23, 1985
Filed:
Jul. 06, 1982
Albert B Welch, Dallas, TX (US);
LTV Aerospace and Defense Company, Dallas, TX (US);
Abstract
A method and apparatus for generating a plurality of secondary directional modes within the resonant cavity of a scanning laser oscillator. A first directional mode is generated by directing an electron beam on a variable reflectance end reflector to create a variable position pixel. A pattern of fixed reflectance material is positioned on the surface of the variable reflectance end reflector to generate the secondary directional modes within the resonant cavity. The oscillation threshold for the secondary directional modes is higher than the first directional mode, thereby allowing the first directional mode to have priority over the second directional modes. The second directional modes occupy the regions of the active laser medium of the resonant cavity not occupied by the first directional mode thereby suppressing the gain of the laser medium therein.