Which outcome occurs when an electron transitions between orbitals in a Ruby laser crystal?

💡 Explanation

When electrons transition to lower energy orbitals, spontaneous emission of photons occurs, and these then stimulate other excited electrons via stimulated emission, amplifying light and lasing occurs in Ruby lasers. Therefore, fluorescence emission leads to amplification, rather than phonon scattering, Auger recombination, or Raman scattering which are effects that require different excitation processes or crystal properties.

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