Calculations are presented for the generation of an isolated attosecond pulse in a multicycle two-color strong-field regime. We show that the recollision of the electron wave packet can be confined to half an optical cycle using pulses of up to in duration. The scheme is proven to be efficient using two intense beams, one producing a strong field at ω and the other a strong field detuned from . The slight detuning of the second harmonic is used to break the symmetry of the electric field over many optical cycles and provides a coherent control for the formation of an isolated attosecond pulse.
© 2007 Optical Society of AmericaFull Article | PDF Article
Yiping Huo, Zhinan Zeng, Ruxin Li, and Zhizhan Xu
Opt. Express 13(24) 9897-9902 (2005)
Thomas Pfeifer, Lukas Gallmann, Mark J. Abel, Daniel M. Neumark, and Stephen R. Leone
Opt. Lett. 31(7) 975-977 (2006)
Wei Cao, Peixiang Lu, Pengfei Lan, Xinlin Wang, and Guang Yang
Opt. Express 15(2) 530-535 (2007)