Question

The population inversion necessary for laser action used in ruby laser is ? (A) Electric discharge (B) Optical pumping (C) Direct conversion (D) Inelastic atom atom collision

Answer 1

Answer:

in a ruby laser, population inversion is required to achieve laser emission.population inversion is the process of achieving the greater population of higher energy state than the lower energy state.

Answer 2

The correct option is:

(B) Optical pumping

• Optical pumping refers to light acting like a pump or source of energy thus resulting in excitation or providing energy to formerly assumed to be at rest electrons.
• This excitation of electrons can be achieved in many ways including optical pumping.
• This excitation lets the electrons come over the force of attraction and shoot off like a beam. Thus, the correct option in a ruby laser is optical pumping.