Mid-infrared continuously tunable single mode VECSEL

Abstract

Single mode continuously tunable mid-infrared Vertical External Cavity Surface Emitting Lasers (VECSEL) have been realized [1]. IV–VI semiconductors such as PbTe are used for the active region. Emission wavelength is ∼5 µm with a total tuning range >100 nm. The VECSEL is optically pumped using a 1.55 µm laser diode.