Semiconductor laser array having power and high beam quality.

摘要

A practically uniform near-field intensity distribution is obtained from a laser array by utilizing a resonance condition that occurs in an array of antiguides structured to fall within or near a narrow range of parameters that favor the condition. More specifically, for a give operating wavelength, the width, interelement spacing, and refractive indices of the antiguides are selected to produce an operating point at or close to the resonance condition, in which there is coupling not just between adjacent waveguides, but between all of the waveguides, i.e. coupling from each waveguide element to all other elements in the array. With this complete of parallel coupling, device coherence is maximized and a practically uniform near-field distribution is obtained. <IMAGE>