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We report on coherent synthesis of outputs from two ultra-broadband optical parametric amplifiers; their timing is locked to sub-30-as by a balanced cross-correlator. Synthesised pulses have octave-spanning (500–1000 nm) spectra and nearly single-cycle 3.8-fs duration.
We report on coherent synthesis of two ultra-broadband optical parametric amplifiers, resulting in octave-spanning (500–1000 nm) spectra supporting nearly single-cycle sub-4-fs pulse duration. Synthesized pulse timing is locked to sub-300-as by a balanced cross-correlator.
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.
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