What is stimulated emission in laser?

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How does it work? When we incident a photon on atom in higher energy level , it doesn’t gets excited to higher energy level, Instead it comes backs to ground state, why?Also how the emiited photons are coherent?

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3 Answers

Anonymous 0 Comments

A photon just kicks electrons around. It CAN kick them to higher energy levels, but often it doesn’t, and sometimes it can speed up how fast it’s going down to a lower orbital.

Imagine it like billyard balls on a staircase and you shoot random bullets at them.

Anonymous 0 Comments

A photon just kicks electrons around. It CAN kick them to higher energy levels, but often it doesn’t, and sometimes it can speed up how fast it’s going down to a lower orbital.

Imagine it like billyard balls on a staircase and you shoot random bullets at them.

Anonymous 0 Comments

A photon just kicks electrons around. It CAN kick them to higher energy levels, but often it doesn’t, and sometimes it can speed up how fast it’s going down to a lower orbital.

Imagine it like billyard balls on a staircase and you shoot random bullets at them.