Answer: Understanding Ruby Laser Energy Levels and Pumping: Cr+3 Ion Diagram

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SUMMARY

The discussion focuses on the energy levels of the Cr3+ ion in ruby lasers, specifically addressing the emitted wavelength and the energy photons required for pumping chromium atoms. Ruby lasers emit light at a wavelength of 694.3 nm, corresponding to the transition from the metastable state to the ground state. To pump chromium atoms from the ground state to the second and third excited states, photons with energies of 2.3 eV and 1.79 eV, respectively, are necessary.

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shaiqbashir
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Hi!

Plz help me in this laser problem!


2. The energy level diagram of Cr+3 ion is shown. ruby Lasers have less chromium ions in aluminium oxide.

A) what wavelength is emitted by ruby laser?
B) What energy photons can pump chromium atoms in a ruby laser from the ground state to its second and third excited state?


Here is the fig for this question:


_______________________ 3.0 eV

_______________________ 2.3 eV

_______________________ 1.79 eV
Metastable State


_______________________
Ground State


Thanks in advance
 
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