University of California

Europaische Organisation Fuer Astronomische Forschung in Der Suedlichen Hemisphaere

Wolfgang Hackenberg

Stephen Anthony Payne

Jay Walter Dawson

Raymond John Beach

Alexander D Drobshoff

Deanna M Pennington

Domenico Bonaccini

Domenico Bonaccini Calia

Zhi Ming Liao

Luke Taylor

A fibre laser comprises a fibre light guide () having an active medium, a laser as pumping source () and a first pair of Bragg gratings () forming a first resonator (). The first pair of Bragg gratings () resonates the pump laser () and there is provided a second pair of Bragg gratings () resonating at the output wavelength of the fibre laser.

Narrow band high power fibre lasers with extended wavelength coverage

An optical fiber amplifier includes a length of silica optical fiber having a core doped with neodymium, a first cladding and a second cladding each with succeeding lower refractive indices, where the first cladding diameter is less than 10 times the diameter of the core. The doping concentration of the neodymium is chosen so that the small signal absorption for 816 nm light traveling within the core is less than 15 dB/m above the other fiber losses. The amplifier is optically pumped with one laser into the fiber core and with another laser into the first cladding.

High power 938 nanometer fiber laser and amplifier

Growing community of inventors

Munich, Germany

Wolfgang Hackenberg