A laser is also known as laser diodes (LD), and light-emitting diode (LED) is an optoelectronic device, both devices generated light. But the way they emit light have different characteristics.
The laser emits converging light while the output of the LED is highly divergent. Eyes protection should be used when dealing with these optoelectronic devices, especially in the case of Laser as it generates high energy beam.
Why are laser diodes preferred over LED? What are the key attributes that make them different from each other?
LED stands for Light-emitting Diode. LED is a semiconductor light source that emits light when it passes through the current.
LASER stands for Light Amplification by Stimulation of Emitted Radiation. A Laser is a light-emitting system based on the stimulated emission of electromagnetic radiation by an optical amplification process.
Differences between laser diodes and LED
The main difference between the LED and diode is that the LED emitting light causes the diode to flow in just one direction and opposes the flow in the other.
Comparison table: Differences between the Laser diode and the LED