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. 14, 2013
Filed:
Nov. 23, 2009
Applicant:
Roy D. Mead, Edmonds, WA (US);
Inventor:
Roy D. Mead, Edmonds, WA (US);
Assignee:
Lockheed Martin Corporation, Bethesda, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/35 (2006.01); H01S 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Fiber-laser light is Raman shifted to eye-safer wavelengths prior to spectral beam combination, enabling a high-power, eye-safer wavelength directed-energy (DE) system. The output of Ytterbium fiber lasers is not used directly for spectral beam combining. Rather, the power from the Yb fiber lasers is Raman-shifted to longer wavelengths, and these wavelengths are then spectrally beam combined. Raman shifting is most readily accomplished with a 'cascaded Raman converter,' in which a series of nested fiber cavities is formed using fiber Bragg gratings.