Application of dynamic gratings to broad spectral band beam steering

In this paper we consider some of the implications of steering broad spectral band radiation using dynamic gratings. The similarities and differences in dispersion between dynamic gratings formed with electro-optic phase arrays and with microlens arrays are highlighted. Optical design considerations are presented that limit the dispersion in the image. System designs that use refractive, diffractive, and combinations of refractive and diffractive components to partially correct for the dispersion are analyzed.