... investigation indicated that the degree of alignment could be improved by minimizing the rotational temperature of the molecules or by increasing the laser intensity. For practical application, minimizing ... sampling interval (the digitizing step) in the time domain. The value of Δz0 is usually assumed to be less than the least variation scale of the investigated extinction and backscattering inhomogeneities. ... alone, blue line represents the alignment signal at Tr/2 induced by the second aligning laser pulse alone, black line represents the enhanced alignment signal induced by the two aligning laser...