Figure 2.

Impact of the state of the laser polarization at ${\sum }_{\sigma }\mathit{M}=0$. The traces of ${\mathit{J}}_y^{\mathrm{s}}$ for various laser polarization states at (a) β = 180° and (b) β = 270°. The amplitude of ${\mathit{J}}_y^{\mathrm{s}}$ varies (c) as a slightly distorted cos(3β) function when using the linear pump polarization and (d) as a slightly distorted sin(3β) function when using the circular pump polarization. The marks are measured results and the solid curves are fit. Laser polarization state: Red, along x ; Blue, along y ; Green, left; Yellow, right.