WorksheetsLASER PRINCIPLES
Total questions: 10
Worksheet time: 3mins
Who built the first working laser?
Albert Einstein
Charles H. Townes
Gordon Gould
Theodore H. Maiman
What principle allows lasers to amplify light?
Passive absorption
Spontaneous emission
Stimulated emission
Random emission
Which of the following is NOT a property of laser light?
Coherence
High directivity
Monochromaticity
Low intensity of beam
What is population inversion in the context of laser operation?
All atoms emitting light simultaneously
Equal number of atoms in all energy states
More atoms in the excited state than in the ground state
More atoms in the ground state than in the excited state
Which type of laser was produced by Ali Javan and William R. Bennett?
Diode laser
Gas laser
Liquid laser
Solid-state laser
During stimulated absorption, what happens to an atom's electron?
It emits a photon
It remains in its original state
It drops to a lower energy level
It jumps to a higher energy level
What year was the first functioning laser operated?
1917
1953
1960
1970
Which process leads to the emission of a photon identical to an incoming photon?
Passive radiation
Random reflection
Spontaneous absorption
Stimulated emission
What technique is used to achieve population inversion in a laser?
Cooling the system to absolute zero
Pumping energy into the system
Reducing the wavelength of light
Allowing natural emissions to occur
Which of the following describes coherence in laser light?
Light with low intensity
Light that scatters in all directions
Light with different frequencies and phases
Light with the same phase, frequency, and wavelength
