F. Lekien et al., ATTOSECOND PULSE GENERATION USING HIGH HARMONICS IN THE MULTICYCLE REGIME OF THE DRIVER PULSE, Physical review. A, 58(4), 1998, pp. 3311-3319
High-harmonic generation in He atoms illuminated by high-intensity fem
tosecond excitation pulses is studied. It is shown that single attosec
ond pulses as well as trains of several attosecond pulses, one per hal
f a period, can be generated in the multicycle regime of the driver pu
lse. [S1050-2947(98)06910-8].