What does the acronym ‘LASER’ stand for?

The acronym ‘LASER’ stands for "Light Amplification by Stimulated Emission of Radiation." This definition highlights the fundamental principles of how lasers operate.

In this process, light is amplified through stimulated emission, which is the release of photons as electrons drop to a lower energy level within an atom. This core mechanism allows for the production of coherent and intense light beams characteristic of lasers. Understanding this principle is foundational for anyone involved in laser safety and operation, as it also emphasizes the unique properties of laser light, such as its monochromaticity, directionality, and coherency, which are critical in assessing potential hazards and safety measures in environments where lasers are used.

The other options do not accurately reflect the scientific principles underlying laser technology, making them less relevant in the context of laser safety and operations.