How LASER Works:
- The gain medium of the laser, which can be a solid, liquid, or gas, takes in energy from an outside source.
- The gain medium’s atoms, ions, or molecules are excited by this energy, which causes them to move to a higher energy level.
- A spontaneous transition back to lower energy is possible for iron atoms or molecules that are in an excited state.
- They discharge photons (light) with particular wavelengths and directional characteristics during this transition. Randomness governs the phases and directions of spontaneous emission.
- Stimulated emission can happen when an excited atom, ion, or molecule is near a photon that has the same energy and direction as the photon that was released.
- A second photon with the same energy, phase, and direction as the incoming photon is released by the excited particle as a result of the interaction between the incoming photon and the excited particle.
- As a result, more photons with the same characteristics are created, Amplifying the original light.
LASER Full Form
Full form of LASER is Light Amplification by Stimulated Emission of Radiation, which causes specific atoms or molecules to emit light with a particular wavelength. A small amount of UV light, visible or infrared light is absorbed by lasers.
Optical disc, barcode scanners, laser printers, DNA sequencing equipment, fiber optics, laser surgery, and skin treatments, cutting and welding materials, manufacturing laser chip (photolithography), and military and law enforcement equipment for marking targets and measuring range and speed all use lasers.
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