Abstract

A lot of researches have been made under the new class of surface emitting DBR lasers with circular grating up to date¹. The reason for such interest is the potential possibilities to obtain high-power and low-divergence beam of circular symmetry. Recently, a new idea of grating-coupled surface-emitting lasers (GCSEL) with integrated focusing outcoupler has been proposed. This structure consists of three regions; active, first order grating as a resonator and second order grating as a outcoupler.

© 2000 IEEE