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.ppt ( قابل ویرایش و آماده پرینت )
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Lecture VI
LASER
Stimulated emission
Spontaneous emission
Light Amplification by Stimulated Emission of Radiation
Energy level diagram
The possible energies which electrons in the atom can have is depicted in an energy level diagram.
In 1958, Charles Townes and Arthur Schawlow theorized about a visible laser, an invention that would use infrared and/or visible spectrum light.
Light Amplification by Stimulated Emission of Radiation- (LASER).
Properties of Lasers
Produce monochromatic light of extremely high intensity.
The operation of the Laser
پاورپوینت Laser (2)
