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:
Jun. 11, 2013
Filed:
Dec. 03, 2009
Iyad A. Dajani, Albuquerque, NM (US);
Clint M. Zeringue, Albuquerque, NM (US);
Iyad A. Dajani, Albuquerque, NM (US);
Clint M. Zeringue, Albuquerque, NM (US);
The United States of America as Represented by the Secretary of the Air Force, Washington, DC (US);
Abstract
A method to increase the output power of monolithic narrow-linewidth Yb-doped fiber amplifiers by suppressing simulated Brillouin scattering. The fiber amplifier employs a co-propagating geometry and is seeded with broad- (source) and narrow- (source) linewidth signals that are sufficiently different in wavelengths to allow for efficient gain competition and favorable temperature profile at the output end of fiber. The broadband seed signal possesses the higher emission and absorption cross sections. If sourceis also given sufficiently greater input power than source, it will be amplified to its maximum value as the seed signals reach the middle portion of the gain fiber. Beyond that portion, the signal having the lower emission and absorption cross sections (signal) will continue to experience gain by power transfer from both signaland the pump light, attaining a power output well beyond what the maximum output would have been had the amplifier been illuminated with a single frequency beam. Furthermore, if the two signals are carefully selected such that appreciable quantum defect heating occurs during the power transfer, a steep thermal gradient develops leading to even further increase in output power.