Efficient and long-lived field-free orientation of molecules by a single   hybrid short pulse
  We show that a combination of a half-cycle pulse and a short nonresonant laser pulse produces a strongly enhanced postpulse orientation. Robust transients that display both efficient and long-lived orientation are obtained. The mechanism is analyzed in terms of optimal oriented target states in finite Hilbert subspaces and shows that hybrid pulses can prove useful for other control issues. 
D. Daems, S. Gu\'erin, D. Sugny and H. R. Jauslin