EFFECTS OF BINARY PHASE PLATES ON THE FAR-FIELD DIFFRACTION PATTERN OF AN OUT-OF-PHASE COUPLED LINEAR-ARRAY OF WAVE-GUIDE LASERS

In this paper we study the use of a binary phase plate for transforming the double-lobed far-field diffraction pattern of an array oscillating on the out-of-phase mode into a single-lobed pattern. We analyse, versus the filling factor of the array and the distance between the array and the phase filter, the amount of the emitted energy contained in the main lobe. We then compare, in terms of the power concentrated in the central lobe, various configurations of a linear array phase-coupled by the Talbot effect.