Question

For a LASER, what is the need to achieve population inversion?

Answer 1

Answer:

In order to achieve population inversion, we need to supply energy to the laser medium. The process of supplying energy to the laser medium is called pumping. The source that supplies energy to the laser medium is called pump source. mark me brainlist

Answer 2

Answer:

To have a medium suitable for laser operation, it is necessary that these excited atoms quickly decay to level 2. ... Because at least half the population of atoms must be excited from the ground state to obtain a population inversion, the laser medium must be very strongly pumped

Explanation:

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