We theoretically investigate the broadband isolated attosecond generation in a two-color multicycle laser pulse. It is shown that quantum path selection can be realized and then a sub-100-as isolated attosecond pulse is straightforwardly obtained. By adding an UV attosecond pulse to the synthesized two-color field, the continuous harmonic yield is significantly enhanced by 2 orders and the bandwidth is further broadened, which is beneficial to the efficient generation of a sub-100-as isolated attosecond pulse.
© 2008 Optical Society of America
Original Manuscript: July 23, 2008
Manuscript Accepted: August 11, 2008
Published: September 18, 2008
Weiyi Hong, Yuhua Li, Peixiang Lu, Pengfei Lan, Qingbin Zhang, and Xinbing Wang, "Control of quantum paths in the multicycle regime and efficient broadband attosecond pulse generation," J. Opt. Soc. Am. B 25, 1684-1689 (2008)