A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.

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

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 …

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 …

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 …

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 …

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 …

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.

May 29, 2025 · Lasers work by exciting atoms to produce photons. Different types of lasers create photons with different energies. Lasers are used in various applications...

Jul 25, 2025 · Lasers are now used in science, medicine, communication, and manufacturing. Let's explore how lasers work and how they differ from ordinary light sources like light bulbs.