Abstract
Room temperature pulse operation for AlGaInP/GalnP visible laser diodes prepared by gas source molecular beam epitaxy (GSMBE) have been successfully fabricated and demonstrated. In this report, two kinds of laser structures, the lattice-matched quantum well double heterostructure (DH) and the grade-index separate- confinement heterostructure (GRIN-SCH) stained quantum well structure are characterized. Measurements of photoluminescence (PL) intensity, L-I curves and wavelength spectra of these two structures all exhibit lasing properties. At room temperature, it is found that induced lasing phenomena has a full width half maximum (FWHM) of 2.1 nm and 0.5 nm, respectively. The emitting wavelengths range from 6500 Å to 6850 Å.