Highly efficient 3.7 kW peak-power single-frequency combined Er/Er-Yb fiber amplifier
Maxim Khudyakov, Denis S. Lipatov, A N Gur'yanov, Mikhail M. Bubnov, Mikhail E. Likhachev
Abstract
In this Letter, we propose and realize a novel concept for a high-peak-power highly efficient fiber amplifier in the 1.55 µm spectral range. The amplifier is based on the simultaneous utilization of Er-doped, Yb-free, and Er-Yb codoped large-mode-area fibers spliced together. Using this approach, we demonstrate the amplification of single-frequency 160 ns pulses at 1554 nm to a peak power of 3.7 kW with a pump-to-signal conversion efficiency of 23.6% relative to the launched multimode pump power at 976 nm.
Topics & Concepts
Materials scienceAmplifierMulti-mode optical fiberOpticsFiber amplifierPower (physics)YtterbiumAmplified spontaneous emissionErbiumFiberOptoelectronicsOptical amplifierFiber laserOptical fiberDopingLaserPhysicsCMOSComposite materialQuantum mechanicsPhotonic Crystal and Fiber OpticsAdvanced Fiber Laser TechnologiesSolid State Laser Technologies