Difference between laser and ordinary light source
Answers
Answer:
Explanation:
Laser light has high intensity than ordinary light........
Answer:
Difference Between Ordinary Light and Laser Light
Nature of Emission:
Ordinary light is a spontaneous emission.
Laser light is a stimulated emission.
Coherence:
Ordinary light is incoherent. (Photons emitted by an ordinary light source are out of phase.)
Laser light is coherent. (Photons emitted by a laser light source are in phase.)
Directionality:
Ordinary light is divergent.
Laser light is highly directional.
Monochromatic/Polychromatic:
Ordinary light is polychromatic. It covers a wide range of frequencies. (A mixture of waves having different frequencies).
Laser light is monochromatic. (Covers a very narrow range of frequencies.)
Applications:
Ordinary light is used in lighting a small area. (Where divergence of the light sources is very important).
Laser light is used in eye surgery, tattoo removal, metal cutting machines, CD players, in nuclear fusion reactors, laser printing, barcode readers, laser cooling, holography, fiber optic communication, etc.
Focusing:
Ordinary light cannot be focused to a sharp spot as ordinary light is divergent.
Laser light can be focused to a very sharp spot as laser light is highly directional.