Working Principles of Lasers

What does the term LASER stand for?

• Light Amplification by Stimulated Emission of Radiation

• Laser Amplification by Stimulated Emission of Radiation

• Light Amplification by Spontaneous Emission of Radiation

• Laser Amplification by Spontaneous Emission of Radiation

What makes a laser monochromatic?

• The photons emitted have different wavelengths

• The photons emitted have the same wavelength

• The laser beam is focused

• The laser beam is collimated

What is the term used to describe the waves in a laser beam being in phase with each other?

• Monochromatic

• Coherent

• Collimated

• Amplified

What is the term used to describe a laser beam that is focused?

• Monochromatic

• Coherent

• Collimated

• Amplified

What is the process called when a photon is absorbed by an electron and the electron jumps to a higher energy level?

• Spontaneous Emission

• Stimulated Emission

• Population Inversion

• Excitation

What is the term used to describe the process of an electron releasing a photon with the same energy as the absorbed photon?

• Spontaneous Emission

• Stimulated Emission

• Population Inversion

• Excitation

What is the term used to describe the condition where there are more electrons in the excited state than in the ground state?

• Monochromatic

• Coherent

• Collimated

• Population Inversion

What is the purpose of adding mirrors to a laser setup?

• To make the laser beam monochromatic

• To make the laser beam coherent

• To amplify the laser beam

• To create a standing wave and increase the number of photons

What is the term used to describe a laser beam that is tightly focused?

• Monochromatic

• Coherent

• Collimated

• Amplified

What is the term used to describe the process of increasing the population of electrons in the excited state?

• Spontaneous Emission

• Stimulated Emission

• Population Inversion

• Excitation