Binary-Optics Miniature Talbot Cavities for Laser Beam Addition

摘要

A miniature external cavity has been fabricated from a single 4.5 mm substratefor coherent beam addition of a linear AlGaAs laser array. Binary-optics elements are fabricated on the front surface laser beam collimation and onto the back surface for lateral mode selection. Near-diffraction-limited performance has been observed with up to 80% of the far-field power contained in the central lobe. Reprints. (EMK)