Wavelength-compensated Fourier and Fresnel transformers: a unified approach.
We recognize that one can adapt any dispersion-compensated broadband optical Fourier transformer to achieve wavelength compensation in the Fresnel diffraction region just by inserting a diffractive lens at the input plane and vice versa. This unification procedure is employed in a second stage in the design of a novel hybrid (diffractive-refractive) optical setup that provides, in a sequential way, nearly wavelength-independent Fresnel diffraction patterns in the irradiance of the object transmittance.
Lancis
J
J
Mínguez-Vega
G
G
Tajahuerce
E
E
Fernández-Alonso
M
M
Climent
V
V
Andrés
P
P