Abstract:
A GaN series surface-emitting laser diode and a method for manufacturing the same are provided. The GaN series surface-emitting laser diode includes: an active layer; p-type and n-type material layers on opposite sides of the active layer; a first distributed Bragg reflector (DBR) layer formed on the n-type material layer; an n-type electrode connected to the active layer through the n-type material layer such that voltage is applied to the active layer for lasing; a spacer formed on the p-type material layer with a laser output window in a portion aligned with the first DBR layer, the spacer being thick enough to enable holes to effectively migrate to a center portion of the active layer; a second BDR layer formed on the laser output window; and a p-type electrode connected to the active layer through the p-type material layer such that voltage is applied to the active layer for lasing. The laser output window is shaped such that diffraction of a laser beam caused by the formation of the spacer can be compensated for.
Abstract:
PURPOSE: A GaN surface emitting LD(Laser Diode) is provided to secure a stable light mode by an effective hole diffusion to a center portion of a laser emission window. CONSTITUTION: A GaN surface LD comprises an active layer(40), a p-type and an n-type material layers(m1,m2) fronting each other using the active layer(40) as a center portion, a first Bragg reflective layer(49) formed on the rear surface of the n-type material layer(m2), n-type electrodes(47) capable of supplying a voltage for the active layer(40) through the n-type material layer(m2), a spacer(48) having a laser emission window(48b) on the p-type material layer(m1) corresponding to the first Bragg reflective layer(49), a second Bragg reflective layer(52) formed on the laser emission window(48b) and p-type electrodes(50) capable of supplying a voltage for the active layer(40) through the p-type material layer(m1).