Definition: VCSEL

(Vertical Cavity Surface Emitting Laser) Pronounced "vixel." A type of laser diode that emits light from its surface rather than its edge. A VCSEL's circular beam is easy to couple with a fiber, and due to its surface-emission architecture, can be tested on the wafer. VCSELs are also noted for their excellent power efficiency and durability. See laser diode.




Surface Emitting and Edge Emitting