Vertical cavity surface emitting lasers with transparent electrodes.

摘要

Optically transparent and electrically conductive cadmium tin oxide or indium tin oxide (23) is employed in vertical cavity surface emitting lasers (10) for vertical current injection. Continuous wave lasing at room temperature is achieved in GaAs/AlGaAs quantum well lasers. Devices with a 10 mu m optical window which also serves as a vertical current injection inlet give lasing threshold currents as low as 3.8mA. The differential series resistance is (350-450) OMEGA with a diode voltage of (5.1-5.6)V at the lasing threshold. Far field pattern of the laser emission is Gaussian-like with a full width at half maximum of 7 DEG .