500 W rod-type 4 × 4 multicore ultrafast fiber laser
Arno Klenke, Albrecht Steinkopff, Christopher Aleshire, Cesar Jauregui, Stefan Kuhn, Johannes Nold, Christian Hupel, Sigrun Hein, Steffen Schulze, Nicoletta Haarlammert, Thomas Schreiber, Andreas Tünnermann, Jens Limpert
Abstract
We present a coherently combined femtosecond fiber chirped-pulse-amplification system based on a rod-type, ytterbium-doped, multicore fiber with 4 × 4 cores. A high average power of up to 500 W (after combination and compression) could be achieved at 10 MHz repetition rate with excellent beam quality. Additionally, < 500 fs pulses with up to 600 µJ of pulse energy were also realized with this setup. This architecture is intrinsically power scalable by increasing the number of cores in the fiber.
Topics & Concepts
Materials scienceFiber laserOpticsFemtosecondUltrashort pulseOptoelectronicsFiberOptical fiberPhotonic-crystal fiberLaserPower (physics)Core (optical fiber)Beam (structure)Multi-core processorPulse durationFemtosecond pulse shapingPolarization-maintaining optical fiberDispersion-shifted fiberPulse (music)Self-phase modulationDouble-clad fiberPlastic optical fiberFiber optic sensorEnergy (signal processing)Chirped pulse amplificationLaser beamsPulse shapingPhotonicsUltrafast opticsGraded-index fiberPhotonic Crystal and Fiber OpticsAdvanced Fiber Laser TechnologiesLaser-Matter Interactions and Applications