We demonstrate the generation of 10-µJ coherent extreme-ultraviolet (XUV) light at wavelengths from 73.6 to 42.6 nm, using high-order harmonics. The peak power of this coherent XUV light is estimated to be 0.13 GW at 62.3 nm, and the peak brightness achieved was 3×10<sup>28</sup> photons/(mm<sup>2</sup>mrad<sup>2</sup>s) . To our knowledge, this XUV energy is the highest value achieved with high-order harmonics.
© 2002 Optical Society of America
Eiji Takahashi, Yasuo Nabekawa, and Katsumi Midorikawa, "Generation of 10- µJ coherent extreme-ultraviolet light by use of high-order harmonics," Opt. Lett. 27, 1920-1922 (2002)