title: Coherent combination of high power fiber amplifiers in a two-dimensional re-imaging waveguide.
abstract: Four actively phase-locked beams produced by fiber amplifiers in a master oscillator power amplifier (MOPA) configuration were coherently combined in a glass capillary re-imaging waveguide producing more than 100 W of coherent output with 80% combining efficiency and excellent beam quality. The beam combiner components maintained a temperature below 30 degrees C with no external cooling at >100 W of combined power.
authors.affiliation: Lockheed Martin Coherent Technologies, Sensing and Exploration Systems, Louisville, Colorado 80027, USA. radek.uberna@lmco.com
authors.forename: Radoslaw
authors.initials: R
authors.lastname: Uberna
authors.forename: Andrew
authors.initials: A
authors.lastname: Bratcher
authors.forename: Thomas G
authors.initials: TG
authors.lastname: Alley
authors.forename: Anthony D
authors.initials: AD
authors.lastname: Sanchez
authors.forename: Angel S
authors.initials: AS
authors.lastname: Flores
authors.forename: Benjamin
authors.initials: B
authors.lastname: Pulford
mesh_terms: D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation* / Q000379:methods*; D006358:Hot Temperature; D007834:Lasers; D008027:Light; D055100:Optical Fibers; D011108:Polymers
chemical_list: D011108:Polymers