LASER

What is the primary principle underlying the operation of a laser?

• A) Reflection of light

• B) Population inversion

• C) Diffusion of light

• D) Absorption of energy

What does LASER stand for?

What is the role of population inversion in laser operation?

• A) It allows for efficient energy absorption by the medium

• B) It ensures that more atoms are in the excited state than in the ground state

• C) It prevents the emission of light from atoms

• D) It stabilizes the laser output frequency

Which of the following statements accurately describes a three-level laser system?

• A) It requires two energy levels for operation

• B) It uses one excited state and two ground states

• C) It provides a more efficient method of achieving population inversion

• D) It operates without any external energy input

What are the essential components in LASER

• A) Active Medium

• B) Resonator

• C) Pumping

• D) All the above