Petahertz-scale spectral broadening and few-cycle compression of Yb:KGW laser pulses in a pressurized, gas-filled hollow-core fiber
Z. Pi, Hee Yong Kim, E. Goulielmakis
Abstract
We demonstrate efficient generation of coherent super-octave pulses via a single-stage spectral broadening of a Yb:KGW laser in a single, pressurized, Ne-filled, hollow-core fiber capillary. Emerging pulses spectrally spanning over more than 1 PHz (250-1600 nm) at a dynamic range of ∼60 dB, and an excellent beam quality open the door to combining Yb:KGW lasers with modern light-field synthesis techniques. Compression of a fraction of the generated supercontinuum to intense (8 fs, ∼2.4 cycle, ∼650 µJ) pulses allows convenient use of these novel laser sources in strong-field physics and attosecond science.
Topics & Concepts
SupercontinuumOpticsAttosecondMaterials scienceLaserFiber laserDoppler broadeningPhotonic-crystal fiberCore (optical fiber)FiberOptical fiberOptoelectronicsUltrashort pulsePhysicsSpectral lineComposite materialAstronomyLaser-Matter Interactions and ApplicationsAdvanced Fiber Laser TechnologiesTerahertz technology and applications