PULSED ELECTRICAL OPERATION OF 1.5-MU-M VERTICAL-CAVITY SURFACE-EMITTING LASERS

Vertical cavity surface emitting lasers operating in the 1.3- and 1.5- mu m wavelength ranges are highly attractive for telecommunications ap plications. However, they are far less well-developed than devices ope rating at shorter wavelengths. Pulsed electrically-injected lasing at 1.5 mu m, at temperatures up to 240 K, is demonstrated in a vertical-c avity surface-emitting laser with one epitaxial and one dielectric ref lector. This is an encouraging result in the development of practical sources for optical fiber communications systems.