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. 11, 2016
Filed:
Sep. 02, 2015
Applicant:
Physical Sciences, Inc., Andover, MA (US);
Inventors:
Peter F. Moulton, Bedford, MA (US);
Robert Stegeman, Bedford, MA (US);
Assignee:
Physical Sciences, Inc., Andover, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/30 (2006.01); H01S 3/067 (2006.01); H01S 3/16 (2006.01); H01S 3/23 (2006.01);
U.S. Cl.
CPC ...
H01S 3/06754 (2013.01); H01S 3/06708 (2013.01); H01S 3/1616 (2013.01); H01S 3/23 (2013.01);
Abstract
A method of operating a Tm:doped fiber amplifier including selecting a length of Tm:doped optical fiber to be less than one hundred meters, doping the optical fiber with active ions at a doping level of greater than one percent, optically pumping the doped optical fiber with a first laser beam having a wavelength longer than the wavelength where a maximum absorption cross section is provided by the active ions, and creating a population inversion between two active ion energy levels with the first laser beam, the active ions providing a gain to a second laser beam.