A laser differs from other sources of light in that it emits light that is coherent. Spatial coherence allows a laser to be focused to a tight spot, enabling uses such as optical communication, [6] …

Oct 13, 2025 · Laser, a device that stimulates atoms or molecules to emit light at particular wavelengths and amplifies that light, typically producing a very narrow beam of radiation. The …

Sep 23, 2025 · 레이저 (LASER)는 복사 유도 방출에 의한 광증폭 (Light Amplification by Stimulated Emission of Radiation)의 줄임말로, 본래 빛의 증폭이라는 물리적 현상을 이르는 말이다.

Sep 25, 2025 · Because laser light stays focused and does not spread out much (like a flashlight would), laser beams can travel very long distances. They can also concentrate a lot of energy …

The most powerful laser designed to date can be found at the European Extreme Light Infrastructure facility in Romania. Its lasers are some of the most intense in the world, …

Nov 28, 2024 · An easy-to-understand explanation of how lasers work, with a simple diagram showing what's inside a laser.

May 29, 2025 · The word “laser” is an acronym for “light amplification by stimulated emission of radiation.” Lasers have many uses, including cutting and welding materials, measuring …

레이저[1][2] (laser, 문화어: 레이자)는 유도 방출 광선 증폭 (Light Amplification by the Stimulated Emission of Radiation)의 머릿글자다. 원자나 분자 내부에 축적된 에너지를 집약적으로 뽑아내는, …

Dec 5, 2024 · What is a Laser? A laser, simply put, is a device that can produce laser light. It plays a primary role in various laser machines. The word “laser” is an acronym for “Light …

A laser is created when electrons in the atoms in optical materials like glass, crystal, or gas absorb the energy from an electrical current or a light. That extra energy “excites” the …