Generation of isolated attosecond pulses in bowtie-shaped nanostructure with three-color spatially inhomogeneous fields*
Xue Shan, Du Hong-Chuan†, Xia Yue, Hu Bi-Tao‡
       
(a) and (b) Enhanced 800-nm driving field and enhanced two-color field with the incident driving field amplitude normalized to 1 at g = 18 nm. (c) and (d) Corresponding HHG spectra of the two laser fields, respectively.