$\boldsymbol{125^{\mathrm{o}}\mathrm{C}}$ CW Operation of $\boldsymbol{1.2-1.3 \mu \mathrm{m}}$ Wavelength GaAs-based Lasers with Type-II (GaIn)As/Ga(AsSb)/(GaIn)As-“W”-Quantum Well

The GaAs-based Type-II (GaIn)As/Ga(AsSb)/(GaIn)As “W”-quantum-well structure has the possibility for the efficient and thermally stable operation as 1.2-1.3 $\mu \mathrm{m}$ wavelength lasers. In this work, we demonstrate $125^{\circ}\mathrm{C}$ CW lasing operation from ridge-waveguide lasers and the reduction of a lasing wavelength shift depending on temperature which is obtained using the band configuration with the type-II “W”-quantum-well structure.