Physics, asked by soodkanishk4784, 1 year ago

Advantages of four level laser over three level laser

Answers

Answered by roopghuman
4
The pumping operatin of a four level laser is similar to the pumping of a three level laser. ... The advantage of the four level laser is the low population of the lower laser energy level. To create population inversion,there is no need to pump more than 50% of to the atoms to the upper laser level.
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