Room-temperature CW operation of AlGaInP double-heterostructure visible lasers

Room-temperature continuous-wave (CW) operation of (Al0.4Ga0.6)0.5In0.5P/Ga0.5In0.5P/(Al0.4Ga0.6)0.5In0.5P double-heterostructure visible semiconductor lasers has been achieved for the first time. CW operation is obtained up to 50° C. The threshold current at 25° C is mA (4.1 kA/cm2). The lasing wavelength is 689.7 nm.