Ruby Laser Construction and Characteristics
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Questions and Answers

What is the laser medium used in a ruby laser?

  • Synthetic ruby crystal (correct)
  • Chromium crystal
  • Aluminum oxide crystal
  • Synthetic diamond

Who developed the first successful ruby laser in 1960?

  • Theodore Maiman (correct)
  • Albert Einstein
  • Marie Curie
  • Isaac Newton

What is the wavelength of the light emitted by a ruby laser?

  • 1064 nm
  • 694.3 nm (correct)
  • 532 nm
  • 800 nm

What property of chromium makes it crucial for the lasing behavior of ruby crystal?

<p>Absorbing green and blue light (A)</p> Signup and view all the answers

How are the ends of the ruby rod prepared in a ruby laser?

<p>Flat and parallel (C)</p> Signup and view all the answers

What type of lamp is used for pumping ions in a ruby laser?

<p>Xenon lamp (D)</p> Signup and view all the answers

What is the main function of the energy levels E3I and E3II in the ruby laser?

<p>To provide three energy levels for population inversion and lasing action (A)</p> Signup and view all the answers

What is the wavelength of the pump band that corresponds to the absorption of light by the ground state of Cr+3 ions?

<p>550 nm and 400 nm (C)</p> Signup and view all the answers

What happens to the energy levels in the upper bands after the Cr+3 ions absorb light?

<p>They rapidly lose some of their energy to crystal lattice (B)</p> Signup and view all the answers

What is the result of the spontaneous emission photon by Cr+3 ion at E2 level to E1?

<p>Stimulated emission by other Cr+3 ions (D)</p> Signup and view all the answers

Why are ruby lasers considered economical?

<p>They are in solid form and hence there is no chance of wasting material of the active medium (C)</p> Signup and view all the answers

What is the class of lasers that ruby lasers are known as?

<p>Class-I lasers (B)</p> Signup and view all the answers

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