Basics of Lasers and Laser Light Quiz

What does LASER stand for?

• None of the above

• Luminous Amplification by Spontaneous Emission of Radiation

• Light Amplification by Spontaneous Emission of Radiation

• Light Amplification by Stimulated Emission of Radiation

• Luminous Amplification by Stimulated Emission of Radiation

Which type of laser emits light that is highly directional?

• Solid LASER

• Gas LASER

• Excimer LASER

• Liquid LASER

• Free Electron LASER

What is the active medium in a gas laser?

• Liquid dyes

• Gases

• Semiconductors

• Plasma

• Solid crystals

What is the process of exciting electrons from the ground to the metastable state called?

• Population Inversion

• Excitation Mechanism

• Lasing Action

• Electron Transition

• Optical Pumping

Which type of laser is used as a convenient drill to bore holes in diamond?

• Liquid LASER

• Free Electron LASER

• Excimer LASER

• Solid LASER

• Gas LASER

What are the effects of laser light in the visible to near infrared spectrum on the eye?

• Damage to the retina resulting in scotoma

• Photoacoustic retinal damage

• Visual disorientation due to retinal damage

• Temporary blindness due to light scattering

• Damage to the cornea and/or to the lens

Which type of mirror reflects essentially 100% of the laser light?

• Totally Reflecting Mirror

• Partially Reflecting Mirror

• Perfect Reflecting Mirror

• High Reflectance Mirror

• Partially Leaky Mirror

What is the state in which more number of atoms are in excited state compared to the ground state called?

• Excited State

• Super Excited State

• Metastable State

• Population Inversion

• Ground State

What is the wavelength range in which lasers operate?

• Ultraviolet, visible, and infrared

• Long wavelength, short wavelength, and gamma ray

• Micro, milli, and nano

• X-ray, ultraviolet, and infrared

• Radio, red, and blue

What is the process of an electron spontaneously returning to its ground state and producing a photon called?

• Excitation Mechanism

• Lasing Action

• Photoelectric Effect

• Stimulated Emission of Radiation

• Spontaneous Emission