Abstract

The optical Fourier transform provided by an ideal achromatic Fourier transformer is located in a single Fraunhofer plane, but with the same magnification for each wavelength [1]. Similarly, an achromatic Fresnel diffraction pattern results from the in-plane superposition, with the same scale, of the incoherent monochromatic versions of a specific Fresnel pattern generated by the spectral components of the incident light.

© 1992 Optical Society of America