SURFACE-EMISSION SEMICONDUCTOR LASER

摘要

A surface-emission semiconductor laser is capable of transverse-mode oscillation control. A substrate includes a laminated semiconductor structur e having an emission layer arranged between an upper reflector layer and a low er reflector layer. To form a window through which laser is emitted, an opening above the upper reflector layer part is coated in part with a layer, such as dielectric film, transparent to the laser wavelength. The transverse mode of laser oscillation can be controlled by varying the two-dimensional shape of the window.