title: Single-mode monolithic GaSb Vertical-Cavity Surface-Emitting Laser.
abstract: We report on the fabrication and performances of an electrically-pumped GaSb monolithic VCSEL, i.e. ,a VCSEL with two epitaxial Bragg mirrors. Selective lateral etching of a tunnel junction is used to provide current and optical confinement. Laser devices with a 6 µm tunnel-junction effective diameter operate at 2.3 µm in CW up to 70 °C, with a threshold current as low as 1.9 mA at 30 °C. The laser emission is single mode with a SMSR near 25 dB and mode-hop-free electro-thermal tunability around 14 nm. This is the first demonstration of a single-mode electrically-pumped monolithic GaSb-based VCSEL.
authors: Institut d'Electronique du Sud, Université Montpellier 2, CNRS, UMR 5214, Place Eugène Bataillon, CC067, F-34095 Cedex 5, Montpellier France. sanchez@ies.univ-montp2.fr
authors: Dorian
authors: D
authors: Sanchez
authors: Laurent
authors: L
authors: Cerutti
authors: Eric
authors: E
authors: Tournié