hyperbolic_secant_profile_index
- pygrin.pygrin.hyperbolic_secant_profile_index(n_0, alpha, r)[source]
Index of a hyperbolic secant grin lens at a particular radius.
- Parameters
n_0 – index of refraction at center of grin lens [unitless]
alpha – parameter (like gradient for parabolic lens) [1/mm]
r – distance from center of lens [mm]
- Returns
float – the index of a parabolic grin lens at r [unitless]