Line Plot from Scientific Research

Integrated (8 x 2) diffraction spot intensity as function of pump-probe delay Δ t at incident photon energies of 0.8 eV and 1.55 eV on a stepped wafer. The light polarization was chosen parallel and perpendicular to the nanowire orientation, respectively, corresponding to the maximum switching efficiency at fluences of F 0.8 = 1.95 mJ cm -2 and F 1.55 = 3.12 mJ cm -2 . For identical intensity suppression, the relaxation into the (8 x 2) ground state accelerates with photon energy due to increasing thermal lattice fluctuations, following the phase transition (see the inset).

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