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Lecture VI
LASER
Stimulated emission
Spontaneous emission
L ight A mplification by S timulated E mission of R adiation
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.
L ight A mplification by S timulated E mission of R adiation- ( LASER ).
Properties of Lasers
Produce monochromatic light of extremely high intensity.
T he operation of the Laser

 

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