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All-fiber chirped-pulse amplification based on a large-mode-area Er:Yb-doped photonic-crystal fiber is presented. A dispersion-variable hybrid fiber stretcher compensates the peculiar dispersion of the hollow-core photonic-bandgap fiber compressor yielding transform-limited 440-fs pulses with 1-W average power.
An analytic model of chirped-pulse amplification is presented. The model is used to optimize the peak power in fiber chirped-pulse amplification, in which the interplay of nonlinearity and third-order dispersion plays a major role.
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.
Spectral shaping in a fiber amplifier with finite gain bandwidth (DeltalambdaFWHM~15nm) and strong self-phase-modulation (PhiNL~12pi) is studied numerically and experimentally. Pulses amplified to 30 muJ energy are dechirped to 250 fs duration.
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.
Basic experiments of OPCPA with a Type I BBO crystal were conducted using the supercontinuum generated in a PCF. Tunable amplification bandwidth of 100 nm was demonstrated.
We demonstrate a simple, all-fiber technique for removing nonlinear phase on a pulse-to-pulse basis in a fiber-based CPA system. Removal of 1.0 pi of nonlinear phase is achieved.
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