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VCSEL Overview
The vertical-cavity surface-emitting laser ( VCSEL) is a type of semiconductor laser diode with laser beam emission perpendicular from the top surface, contrary to conventional edge-emitting semiconductor lasers (also in-plane lasers) which emit from surfaces formed by cleaving the individual chip out of a wafer. VCSELs are used in various product application fields: 3D perception, data communication, laser radar (lidar) ,and other fields.
Features of VCSEL:
Compared with EEL (edge emitter) and LED light source, VCSEL has a different structure and has unique characteristics
and advantages, as shown in the figure below. The vertical structure of VCSEL is more suitable for wafer-level manufacturing,
packaging and testing. Compared with side-emitting LEDs, the cost after mass production has advantages and high reliability. Compared with LED,
VSCEL has some significant advantages, such as high spectral quality and fast response speed.
