Monolithic integration of dual-layer optics into broad-area semiconductor laser diodes

A broad-area semiconductor laser diode with two monolithically integrated optical elements is presented. A 275-nm period detuned second-order diffraction grating on the p-doped side layer is combined with a refractive lens transferred into the GaAs substrate so that outcoupling and beam-shaping functions are decoupled. The high-power device produces a circular spot and demonstrates the potential of dual optics integration in broad-area semiconductor diodes.