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We present a contrast filter reaching 12 orders of magnitude from micro to milliJoule input pulse with 24% efficiency. It solves contrast issue for Petawatt class lasers in microjoule seeded CPA or double CPA scheme.
We present a theoretical and experimental analysis of two-grating phasing in a broadband pulse mosaic compressor. The phase defaults induced by misaligned gratings and the grating gap effect are studied in a mosaic compressor scheme.
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%.
The results of experimental measurement of small surface oscillations using a femto-second laser are presented. Itpsilas shown that the use of ldquochirpedrdquo pulses allows to reduce the contribution of correlated noise to the signal-to-noise ratio.
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