High Quality Content by WIKIPEDIA articles! F. J. Duarte is a laser physicist and author/editor of several well-known books on tunable lasers. He introduced the generalized multiple-prism dispersion theory and has discovered various multiple-prism grating oscillator laser configurations. These configurations include the multiple-prism near-grazing-incidence grating cavities originally disclosed as copper-laser-pumped narrow-linewidth tunable lasers. Duarte`s contributions have found applications in a variety of fields including: