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Over the past decades, advances in ultrafast technologies led to the generation of intense ultrashort THz to optical pulses with single-cycle pulse duration. Using such ultrashort pulses for electron acceleration offers advantages in terms of higher thresholds for material breakdown which opens up a promising path towards increased acceleration gradients. In this contribution, we present the first...
We study supercontinuum generation using numerical simulations of the nonlinear propagation along hollow-core fibers at different pump wavelengths ranging from 400 nm to 2 μm. A general hollow fiber compressor design strategy is presented.
We report on a 300-W-level picosecond laser based on a cryogenically-cooled Yb:YAG amplifier seeded by a fiber CPA system. High-average-power picosecond second harmonic generation is also presented.
We demonstrate a high-peak-power, 1-kHz, 2.2-mum OPCPA for long-wavelength-driven high harmonic generation that produces 9-GW, 3-optical-cycle, CEP-stabilized pulses, allowing tunneling-ionization-threshold intensity with low Guoy phase shift.
An optical parametric chirped pulse amplification system producing high-energy, few-cycle pulses at 2.0-mum wavelength with low superfluorescence noise background for high harmonic generation in gas jets is demonstrated.
We present the accurate characterization of the pulse contrast ratio using the decorrelation of high-dynamic-range third-order correlation traces. Experimental measurements with femtosecond and chirped picosecond pulses confirm the necessity of this method.
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