Question

What is laser and optics? What is their working principle and their usage?
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Answer 1

Answer:

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for "light amplification by stimulated emission of radiation and a optics the scientific study of sight and light

Answer 2

Explanation:

Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum, i.e., they can emit a single color of light.What is the principle of laser?

1 Principle of Lasers. The principle of a laser is based on three separate features: a) stimulated emission within an amplifying medium, b) population inversion of electronics and c) an optical resonator.