1 kW, 10 mJ, 120 fs coherently combined fiber CPA laser system
Henning Stark, Joachim Buldt, Michael Müller, Arno Klenke, Jens Limpert
Abstract
An ultrafast fiber chirped-pulse amplification laser system based on a coherent combination of 16 ytterbium-doped rod-type amplifiers is presented. It generates 10 mJ pulse energy at 1 kW average power and 120 fs pulse duration. A partially helium-protected, two-staged chirped-pulse amplification grating compressor is implemented to maintain the close to diffraction-limited beam quality by avoiding nonlinear absorption in air.
Topics & Concepts
OpticsMaterials scienceFiber laserUltrashort pulseChirped pulse amplificationGas compressorLaserAmplifierFiber Bragg gratingLaser beam qualityBeam (structure)Regenerative amplificationPulse (music)Self-phase modulationNonlinear opticsOptical fiberDiffraction gratingOptical amplifierFemtosecond pulse shapingMode-lockingPulse shapingUltrafast laser spectroscopyPower (physics)Absorption (acoustics)GratingOptoelectronicsPulse compressionLaser beamsFiberQ-switchingBandwidth-limited pulsePulse durationAmplified spontaneous emissionBeam splitterPolarization-maintaining optical fiberAttenuation coefficientLaser power scalingBeam expanderPhotonic Crystal and Fiber OpticsAdvanced Fiber Laser TechnologiesSolid State Laser Technologies