LASER

Full Form of LASER is................

The following is not candidate material for laser source in fiber optics

• Nd-YAG

• He-Ne

• Argon

• Phosphorus

What is the need to achieve population inversion?

• To bring most of the atoms to ground state

• To excite most of the atoms

• To achieve stable condition

• To reduce the time of production of laser

Which of the following is a unique property of laser?

• Directional

• Speed

• Coherence

• Wavelength

Which of the following is an example of optical pumping?

• Ruby Laser

• Helium-Neon Laser

• Semiconductor Laser

• Dye Laser