AlGaInAs/AlGaAs SSQW GRINSCH lasers for the wavelength region between 800 and 870 nm

A semiconductor laser is proposed which has an optical active region consisting of an 8 nm thick Al_0.20Ga_0.65In_0.15As/Al_0.20Ga_0.80As strained single quantum well. The spectral emission peak of this quantum well is situated between 814 and 818 nm. The optical confinement is achieved using a standard graded refractive index separate confinement heterostructure optimised for the emission wavelength of the quantum well. Preliminary results show these lasers to have a threshold current of 18 mA.