We theoretically demonstrate a scheme for tomographic reconstruction of asymmetric molecular orbitals based on high-order harmonic generation with a two-color multicycle laser field. It is shown that by adjusting the relative phase of the two fields, the returning electrons can be forced to recollide from one direction for all the orientations of molecules. Thus, the reconstruction of the asymmetric orbitals can be carried out with multicycle laser field. This releases the stringent requirement of a single-cycle pulse with a stabilized and controllable carrier-envelope phase for the tomographic imaging of asymmetric molecular orbitals.
© 2012 Optical Society of America
Original Manuscript: October 5, 2012
Revised Manuscript: November 7, 2012
Manuscript Accepted: November 15, 2012
Published: December 13, 2012
Meiyan Qin, Xiaosong Zhu, Qingbin Zhang, and Peixiang Lu, "Tomographic imaging of asymmetric molecular orbitals with a two-color multicycle laser field," Opt. Lett. 37, 5208-5210 (2012)