MOCVD growth of highly strained 1.3 μm InGaAs:Sb/GaAs vertical cavity surface emitting laser

In0.45Ga0.55As:Sb/GaAs (1.3 μm) vertical cavity surface emitting lasers (VCSELs) were grown by metalorganic chemical vapor deposition (MOCVD). A In0.45Ga0.55As:Sb/GaAs quantum well (QW) exhibited an emission wavelength of 1.26 μm with narrow full-width at half-maximum (FWHM) of 35.9 meV. For the fabricated VCSEL with 5 μm diameter oxide-confined aperture, a room-temperature (RT) threshold current of 2.1 mA and an output power of 0.9 mW with 1.3 μm emission were obtained. The 3 dB modulation frequency was measured to be 7.6 GHz.