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:
Dec. 24, 2013
Filed:
Dec. 30, 2009
Alexander Ovtchinnikov, Worcester, MA (US);
Alexey Komissarov, Charlton, MA (US);
Valentin P. Gapontsev, Worcester, MA (US);
Pavel Trubenko, Worcester, MA (US);
Alexander Ovtchinnikov, Worcester, MA (US);
Alexey Komissarov, Charlton, MA (US);
Valentin P. Gapontsev, Worcester, MA (US);
Pavel Trubenko, Worcester, MA (US);
IPG Photonics Corporation, Oxford, MA (US);
Abstract
A laser diode is configured with a substrate delimited by opposite AR and HR reflectors and a gain region. The gain region bridges the portions of the respective AR and HR reflectors and is configured with a main resonant cavity and at least one side resonant cavity. The main resonant cavity spans between the portions of the respective reflectors, and at least one additional resonant cavity extends adjacent to the main resonator cavity. The gain region is configured so that stimulated emission is generated only in the main resonant cavity. Accordingly, the laser diode is operative to radiate a high-power output beam emitted through the portion of the AR reflector which is dimensioned to shape the output beam with the desired near-field.