Characterization of the plasma mirror system at the J-KAREN-P facility

Characterization of the plasma mirror system at the J-KAREN-P facility

Kon, A.; Nishiuchi, M.; Fukuda, Y.; Kondo, K.; Ogura, K.; Sagisaka, A.; Miyasaka, Y.; Dover, N. P.; Kando, M.; Pirozhkov, A. S.; Daito, I.; Chang, L.; Woo Choi, I.; Hee Nam, C.; Ziegler, T.; Schlenvoigt, H.-P.; Zeil, K.; Schramm, U.; Kiriyama, H.

Abstract

We report on the design and characterization of the plasma mirror system installed on the J-KAREN-P laser at the Kansai
Photon Science Institute, National Institutes for Quantum Science and Technology. The reflectivity of the single plasma
mirror system exceeded 80%. In addition, the temporal contrast was improved by two orders of magnitude at 1 ps before
the main pulse. Furthermore, the laser near-field spatial distribution after the plasma mirror was kept constant at plasma
mirror fluence of less than 100 kJ/cm2. We also present the results of investigating the difference and the fluctuation in
energy, pulse width and pointing stability with and without the plasma mirror system.

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