Figure 8: HH yield as a function of the wavelength ratio K=λ1/λ0.
From: Attosecond nonlinear optics using gigawatt-scale isolated attosecond pulses
The relative intensity ratio ξ=IIR/I800nm is fixed to be 0.15. Dashed line: α=0.7 scaling. Inset: scaling exponent α (from HH yield 
K−α) as a function of ξ.
