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A compact multi-loop stretcher system with a pulse confining structure was demonstrated. This system generated chirped pulse with 32 ps/nm chirp rate. The energy loss in the stretcher was compensated by the OPCPA.
We demonstrate the generation of near-Fourier-limited 9.8 plusmn 0.3 fs laser pulses with an intensity exceeding a terawatt at 30 Hz repetition rate, using noncollinear optical parametric chirped pulse amplification. Amplified fluorescence is kept below 1%.
A numerical model of OPCPA incorporating transverse effects indicates that spatial phenomena are of critical importance. The results differ radically from those of plane-wave codes, revealing complex beam profiles and significantly altered conversion efficiencies.
Optical parametric chirped pulse amplification provides a promising alternative for amplification of high-power few-cycle pulses. Our objective is to explore the feasibility of this concept in amplifying 7 fs phase-stabilized pulses till 10 TW power.
We review progress in the development of kilohertz-repetition-rate few-cycle optical parametric chirped pulse amplifiers (OPCPA) in the near-IR (700-1000 nm) and IR (1700-2800 nm) spectral ranges. These sources hold promise for applications in extreme nonlinear optics and attosecond physics.
We report a novel method for high-energy, few-cycle pulse generation through the combination of parametric amplification and enhancement cavities. Dispersion in the cavity ceases to be a concern with the use of long pump pulses.
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