Figure 4
From: Internal dynamics of intense twin beams and their coherence
(a,b) Numbers 
[
] of spatial radial [spectral] modes (
[Δ] with error bars) experimentally detected in a small area inside the emission PDC cone as functions of pump power P18. For comparison, suitably rescaled spectral (spatial radial) Fedorov ratios 
(
) obtained in GPA (solid curve) and SCM (dashed curve) are also drawn. The theoretical curves nearly coincide in both cases.
