We generated a record peak intensity of 0.7×10<sup>22</sup>W/cm<sup>2</sup> by focusing a 45-TW laser beam with an f/0.6 off-axis paraboloid. The aberrations of the paraboloid and the low-energy reference laser beam were measured and corrected, and a focal spot size of 0.8 μm was achieved. It is shown that the peak intensity can be increased to 1.0×10<sup>22</sup>W/cm<sup>2</sup> by correction of the wave front of a 45-TW beam relative to the reference beam. The phase and amplitude measurement provides for an efficient full characterization of the focal field.
© 2004 Optical Society of America
S.-W. Bahk, P. Rousseau, T. A. Planchon, V. Chvykov, G. Kalintchenko, A. Maksimchuk, G. A. Mourou, and V. Yanovsky, "Generation and characterization of the highest laser intensities (1022 W/cm2)," Opt. Lett. 29, 2837-2839 (2004)