Discuss about the characteristics of lasers.
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Laser light has four unique characteristics that differentiate it from ordinary light: these are
Coherence
Directionality
Monochromatic
High intensity
Coherence
We know that visible light is emitted when excited electrons (electrons in higher energy level) jumped into the lower energy level (ground state). The process of electrons moving from higher energy level to lower energy level or lower energy level to higher energy level is called electron transition.
Directionality
In conventional light sources (lamp, sodium lamp and torchlight), photons will travel in random direction. Therefore, these light sources emit light in all directions.
Monochromatic
Monochromatic light means a light containing a single color or wavelength.
High Intensity
You know that the intensity of a wave is the energy per unit time flowing through a unit normal area. In an ordinary light source, the light spreads out uniformly in all directions.
Coherence
Directionality
Monochromatic
High intensity
Coherence
We know that visible light is emitted when excited electrons (electrons in higher energy level) jumped into the lower energy level (ground state). The process of electrons moving from higher energy level to lower energy level or lower energy level to higher energy level is called electron transition.
Directionality
In conventional light sources (lamp, sodium lamp and torchlight), photons will travel in random direction. Therefore, these light sources emit light in all directions.
Monochromatic
Monochromatic light means a light containing a single color or wavelength.
High Intensity
You know that the intensity of a wave is the energy per unit time flowing through a unit normal area. In an ordinary light source, the light spreads out uniformly in all directions.
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