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:
Aug. 30, 2011
Filed:
Jan. 21, 2010
Applicants:
Gavin Alan James Markillie, Beverley, GB;
Jason Robert Lee, Hull, GB;
Inventors:
Gavin Alan James Markillie, Beverley, GB;
Jason Robert Lee, Hull, GB;
Assignee:
Rofin-Sinar UK Ltd., Willerby, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/03 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mode selection technique in a laser is described wherein a recess is formed in a surface of a waveguide in the laser. The recess provides a region of free space propagation within the waveguide which preferentially selects the lowest order mode. A mode selective RF excited COslab laser, having a stable resonator in the waveguide dimension and a negative branch unstable resonator in the non-waveguide dimension, is constructed and the position and size of the recess is considered to provide low order mode selection.