Cladding-pumped fiber with helical rare-earth-doped core for fiber lasers and amplifiers
A high power fiber laser/amplifier is comprised of a multi-mode rare-earth-doped helical core disposed within a cylindrical inner cladding. The inner cladding is enclosed within an outer cladding whereby the core effectively produces single-mode operation with a circularly polarized near-diffraction-limited beam quality output when pump radiation is injected into the inner cladding.
The United States of America as represented by the Secretary of the Air Force
H H
H01S H01S
inventional inventional
John R. Gerald T.
Marciante Moore