(color online) Time evolutions of the molecular orientations of (a) LiH and (b) HBr steered by the THz laser pulse (dotted), the two-color laser pulse (dashed), and a combination of the two laser pulses (solid), where E 01 = 1.0 × 10 8 V · cm − 1 , σ r = 2 ps , σ f = 0.4 ps , ω 1 = 12500 cm − 1 , E 02 = 2.0 × 10 5 V · cm − 1 , t d = 2.2 ps , τ = 1 ps, φ = π, ω THz = 18 cm − 1 , and T = 0 K.