Summary
Highlights
The term laser stands for Light Amplification by Stimulated Emission of Radiation. It works by exciting atoms within a material—solid, liquid, or gas—and using internal mirrors to bounce light until it gains enough energy to exit as a focused beam.
Unlike standard light bulbs that scatter light in all directions, laser light is highly organized and directional. This allows it to be concentrated onto tiny, precise points, making it an essential tool for various technologies.
Lasers are used in diverse fields, including construction for precision leveling, medicine for eye surgery like LASIK, and consumer electronics such as CD and DVD readers.
The most significant application of lasers is in high-speed global communications, where data travels through thin optical fibers. With the technology still evolving, there is significant potential for future innovation.