Laser Quiz

Which of the following property is a property of laser?

• Directional

• Monochromatic

• Coherence

• Divergent

The forerunner of the laser was the Maser. What does the "M" stands for?

• micron

• military

• millimeter

• microwave

What is the process responsible for producing photons in diode laser?

• Fermi level shift

• Majority carrier injection

• Carrier freeze out

• Electron-hole recombination

What are three types of Laser?

• gas,solid,diode

• diode,inverted,pointer

• gas,metal vapor,rock

• pointer,diode,CD

What was the active medium used in the first working laser ever constructed?

• helium-neon gas

• a diamond block

• carbon dioxide gas

• a ruby rod

Which color of light has the shortest wavelength?

• yellow

• violet

• red

• green

Which of the following is an example of optical pumping?

• Ruby laser

• Helium-Neon laser

• Semiconductor laser

• Dye laser

Example of solid state laser is

• He-Ne laser

• $co_2$ laser

• Nd:YAG Laser

• Dye laser

He-Ne laser is

• three level laser

• four level laser

• two level laser

• five level laser

Indentify the image of laser?

• He-Ne laser

• Ruby laser

• Semiconductor laser

• $co_2$ laser