Lasing characteristics of a continuous-wave operated folded-cavity surface-emitting laser

Abstract
Room-temperature continuous-wave operation of a folded-cavity surface-emitting AlGaAs/GaAs laser with transverse junction stripe structure, which has a dry-etched 45° internal mirror, is demonstrated for the first time. A threshold current of 42 mA and a differential external quantum efficiency of 19% per facet were obtained. A single far-field lobe and single longitudinal mode emission were also observed.