We described the output performance and temporal quality enhancement of the J-KAREN-P
petawatt laser facility. After wavefront correction using a deformable mirror, focusing with an …

The impact of spectral phase noise on the temporal pulse contrast is explored
experimentally by using two zero-dispersion stretchers (Offner stretcher and two-lens …

Here we demonstrate that the pulses in thin solid plates (TSPs) can simultaneously realize
contrast improvement and spectral broadening. In a proof-of-principle experiment, we used …

The temporal contrast of optical pulses produced by high-peak power laser systems is
important for laser-matter applications, such as table-top particle accelerators and sources of …

To achieve multi-petawatt pulses, the generation of high-temporal-contrast few-cycle seed
pulses with the central wavelength of 910 nm is the first step. In this research, high …

One of the key parameters for high power laser systems based on chirped pulse
amplification (CPA)[1] is temporal contrast of the compressed pulse. The temporal contrast …

We propose a new single shot technique for reconstructing femtosecond pulses utilizing self-
phase modulation. The principle of the technique is analyzing multiple spectra belonging to …