Figure 2: Parametric study and polarization control. | Nature Communications

Figure 2: Parametric study and polarization control.

From: Bright high-order harmonic generation with controllable polarization from a relativistic plasma mirror

Figure 2

(a–d) Amplitude ratio ɛ and phase shift ΔφH between the two orthogonal components of the harmonic electric fields as a function of (a) laser amplitude a0, (b) plasma density ne, (c) plasma density scale length Ls and (d) laser incidence angle θ. The other parameters are: (a) ne=100nc, θ=40° and Ls=0.2; (b) a0=5, θ=40° and Ls=0.2; (c) a0=5, θ=40° and ne=100nc; and (d) a0=5, ne=200nc and Ls=0.1. The Ls value is normalized by λ in the moving frame for convenience in the 1D simulations. The different shaded areas in panel (d) represent harmonics possessing opposite helicities. LH, left-handed; RH, right-handed.

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