MULTIMODE VERTICAL-CAVITY SURFACE-EMITTING LASER ARRAYS

摘要

Various embodiments of the present invention are directed to monolithic VCSEL arrays where each VCSEL can be configured to lase at a different wavelength. In one embodiment, a monolithic surface- emitting laser array includes a reflective layer, a light-emitting layer (102), and a grating layer ( 112) configured with two or more non- periodic, sub- wavelength gratings. Each grating is configured to form a resonant cavity with the reflector, and each grating is configured with a grating pattern that shapes one or more internal cavity modes and shapes one or more external transverse modes emitted through the grating.