Hybrid growth of InGaAsP double-channel planar buried heterostructure lasers

Abstract
Separate confinement InGaAsP structures grown by gas-source molecular beam epitaxy have been used in conjunction with liquid phase epitaxial regrowth to fabricate high-performance buried heterostructure lasers operating at a wavelength of 1.52–1.55 μm. These lasers show room-temperature threshold currents as low as 17 mA, external quantum efficiency as high as 27% per facet, and modulation bandwidth of 1.7–2.0 GHz. Single longitudinal mode operation under cw injection can be maintained up to 8 mW.