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] laser cutting, …

激光传感器 （laser transducer）利用激光技术进行测量的传感器。 它由激光器、 激光检测器 和 测量电路 组成。 激光传感器 是新型 测量仪表，它的优点是能实现无接触 远距离测量，速度快，精度高， …

激光 英文名 LASER，其全称是Light Amplification by Stimulated Emission of Radiation。 字面意思就是“光受激辐射放大”。 其为人工光源，具有与自然光不同的特性，可直线传播到很远，并且可聚集在较 …

Dec 25, 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 emission generally …

所有激光器都包含以下三个组件： 泵浦源 受激介质 谐振腔 泵浦源将外源能量供给激光器。 受激介质位于激光器内部，取决于不同的激光器结构设计，激光介质可能是气体混合物 (CO 2 激光)、晶体棒 …

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 electrons enough to move …

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, generating insanely brief …

激光 （英語： laser，新加坡称 镭射，香港称 激光/雷射，台湾称 雷射）是 英文 “ 受激辐射 产生的 光放大 ”（Light Amplification by Stimulated Emission of Radiation）的 缩写，指透过刺激 原子 导致 电 …

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

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 on a very …