Vertical Cavity Surface Emitting Laser (VCSEL)

Vertical Cavity Surface Emitting Laser (VCSEL) Array Chips

A vertical cavity surface emitting laser (VCSEL) is a surface-emitting semiconductor light source which emits laser beams in a direction perpendicular to it’s top surface. Individual VCSEL emitters (or “apertures”) are very small, typically in the order of tens of microns in diameter, but most often they are grouped into larger 2D arrays which collectively generate a much higher output power level.

There are 8 key parameters used to characterize VCSEL arrays :

(1) Output Power

(2) Spectral Width

(3) Beam Divergence Angle

(4) Emission Area

(5) Emitter Pitch

(6) Wavelength Drift

(7) Conversion Efficiency

(8) Rise Time / Fall Time

Vertical cavity surface emitting lasers (VCSELs) have been used for many different applications. The major application fields are:

(1) LiDAR Systems

(2) 3D Scanners

(3) Proximity Sensors

(4) Telecommunications

(5) Laser Printers