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

Oct 13, 2025 · A laser uses a pair of mirrors facing each other—an optical resonator—to build up the light energy in the beam. As light bounces back and forth between the mirrors, it passes …

Laser A telescope in the Very Large Telescope system producing four orange laser guide stars A laser is a device that emits light through a process of optical amplification based on the …

Jul 31, 2023 · Laser pointers work through the principles of light amplification and stimulated emission. Inside a laser diode, which is designed to produce a concentrated beam, a process …

May 24, 2025 · Though laser physics was born from quantum ideas, the laser itself became a tool for probing even deeper into quantum mechanics. Today, researchers use lasers to explore …

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 …

Lasers are devices that concentrate beams of light by forcing their waveforms and frequencies to align. First developed in the 1960s to amplify microwaves, modern lasers technology can ramp …

Sep 25, 2025 · How does a laser work? Light travels in waves, and the distance between the peaks of a wave is called the wavelength. Each color of light has a different wavelength. For …

May 29, 2025 · A laser diode or an injection laser is a semiconductor device that emits coherent light. During operation, the device is pumped with electrical current or light from another laser.

Mar 29, 2024 · Lasers work by making energetic particles vibrate, or "oscillate," in sync, meaning the peaks and troughs of light waves they emit all line up.