internal_field(wavelength = 500, angle = 0, psi = 0, thickness = c(0, 20, 140, 20, 0), dmax = 200, res = 1000, epsilon = c(1^2, -12, 1.38^2, -12, 1.46^2), field = FALSE, ...)
Eric C. Le Ru and Pablo G. Etchegoin, published by Elsevier, Amsterdam (2009).
classify
;
field_profile
, lfief
;
invert_stack
; modify_levels