Ruby laser

Which one is a solid state laser

• Ruby

• He - Ne

• CO2

• None of these

In ruby laser active medium is in the form of ______ of _______ crystal.

• Rod, Ne

• Cylinder, He

• Rod, ruby

• None of these

In Ruby laser, laser beam is reflected from _______ reflecting mirror.

• Fully

• Moderate

• Partially

• None of these

Ruby rod is made up of _________ & ________ oxide.

• Gold & cromium

• Aluminium & cromium

• Silver & cromium

• None of these

In ruby laser some of _____ ions are replaced by _____ ions

• Gold, cromium

• Aluminium, cromium

• Silver, cromium

• None of these

Name the iones, which are the active center of ruby laser?

• Aluminium

• Cromium

• Gold

• Silver

In ruby laser, laser action is possible due to _______ ions.

• Aluminium

• Gold

• Silver

• Cromium

In ruby laser, cromium ions are characterized by ________ state.

• Absorption

• Stimulated

• Spontaneous

• Metastable

In ruby laser, ruby rod is ______ in colour.

• Pink

• Red

• Green

• Orange

In ruby laser, ruby rod of ____ cm in length & ______ cm in diameter.

• 5, 0.6

• 6, 0.4

• 4, 0.5

• None of these