Femtosecond induced transparency and absorption in the extreme ultraviolet by coherent
coupling of the He 2s2p (1Po) and 2p2 (1Se) double excitation states with 800 nm light
Femtosecond induced transparency and absorption in the extreme ultraviolet by coherent
coupling of the He 2s2p (1Po) and 2p2 (1Se) double excitation states with 800 nm light