Extra Plus Basic Knowledge

Fabry-Perot LD Chip Constructione
The Fabry-Perot LD is the simplest structure for a laser diode.
Laser Beam Shape
Laser Beam is not perfectly linear.
Laser Wavelength
The laser wavelength is represented by the symbol λ.
Astigmatic Difference (As)
The LD apparent focal positions are different in the horizontal and the perpendicular to the junction.
LiDAR
LiDAR is characterized by being able to not only accurately detect the distance to a target object, but also its position and shape.

Basic