A simple new three-wave interferometric technique is used to measure, for what is believed to be the first time, the wave front of femtosecond ultrahigh-peak-power pulses carrying a strong <i>B</i> integral (<i>B</i> = 5.26±0.15) in a single shot. Wave-front distortions of a terawatt-class laser system are measured with good accuracy (λ/50) and discussed. These distortions can significantly reduce the focused peak intensity, emphasizing the necessity of implementing adaptive optics in ultrahigh-intensity chirped-pulse amplification lasers.
© 1998 Optical Society of America
Jean-Christophe Chanteloup, Frédéric Druon, Marc Nantel, Anatoly Maksimchuk, and Gérard Mourou, "Single-shot wave-front measurements of high-intensity ultrashort laser pulses with a three-wave interferometer," Opt. Lett. 23, 621-623 (1998)