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:
Oct. 04, 1994
Filed:
Jul. 12, 1993
Dale E Koop, Sunnyvale, CA (US);
Hartmuth Hecht, Mountain View, CA (US);
Coherent, Inc., Santa Clara, CA (US);
Abstract
A resonator design is disclosed particularly suited for a RF excited, carbon dioxide, slab waveguide laser. The laser includes a pair of elongated electrodes spaced apart in a manner to define a slab discharge region having a narrow waveguide axis between the electrodes and a wide axis extending parallel to the electrode surfaces. The resonator is a hybrid design and is a stable, waveguide in the narrow axis, and a negative branch unstable resonator in the wide axis. A pair of mirrors are provided at each end of the electrodes to create a folded beam path in the wide axis. The folded configuration increases the effective length of the resonator which substantially increases the power stability of the laser. The multiple mirror resonator can also be used to increase the width of the discharge region while minimizing spherical aberrations. Each leg of the path has the alignment characteristics of a negative branch unstable resonator so that the alignment of the overall resonator is highly stable.