This figure contains three panels (a, b, and c)
Each panel has a distinct dataset (which are enclosed within the main figure data)
a: 'cic_example_collated_data' (NB: 'cic' stands for 'central internal cooperativity', which means that the cavity is designed to maximise internal cooperativity for a mirror in the centre of the cavity)
b: 'cic_long_collated_data'
c: 'two_emitters_collated_data'

For each of the datasets, the numerical data and plotting was as follows
(Note that all shaping scales are measured in inverse wavelengths. This means that the shaping scale takes value 1/lambda (not 2 * pi / lambda) when referring to a Fourier component with a spatial wavelength of lambda

Data fields:
surface_r: Radial coordinate values to plot the retroreflective optimised surface. Units: metres
surface_protrusion: The protrusion of the retroreflective optimised surface. Units: metres
cutoff_frequencies: The cutoff frequencies of the fourth order Butterworth filter for which the surface reconstruction was applied. Units: inverse metres
cints: The C_{int} values (or C_{int}^{min} for the 'two_emitters_collated_data' dataset) of the cavities with the reconstructed surfaces. Units: dimensionless
key_cints: The C_{int} values that are (in order) 1%, 50%, and 99% of the surface performance without limited shaping scale. Units: dimensionless
key_cutoff_frequencies: The cutoff frequency of the fourth order Butterworth filter where the surface reconstruction yields performance at key_cints. Units: inverse metres
spatial_scale_crit: The critical spatial scale (see Eq. (19)) for the cavity


Figure plots:
i:
Black line: surface_r vs surface_protrusion (identical data plotted for negative r)
(Additional schematics then overlaid, but these are not numerical data)

ii:
Blue line: cutoff_frequencies vs. cints
Red, green and purple lines: Value of the horizontal line from key_cints. Value of the vertical line from key_cutoff_frequencies. Ordered red (1%), green (50%) and purple (99%)
Black vertical line: spatial_scale_crit