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During pumping, the atoms are exited to ___________

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in Engineering Physics II by (679k points)
During pumping, the atoms are exited to ___________

(a) Higher Exited States

(b) Lower Energy states

(c) Meta Stable states

(d) Not Excited

I have been asked this question by my school principal while I was bunking the class.

My doubt is from Population Inversion in chapter Laser of Engineering Physics II

1 Answer

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The correct choice is (c) Meta Stable states

Easiest explanation: Pumping is the process in which the atoms from the lower energy states are excited to meta-stable states by some external source so as to create population inversion.

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