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

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Ruby lasers emit light at a wavelength of approximately 694.3 nm, corresponding to the transition of chromium ions. To pump chromium atoms in a ruby laser from the ground state to the second and third excited states, photons with energies of at least 2.3 eV and 3.0 eV, respectively, are required. The energy level diagram indicates that the metastable state is at 1.79 eV, which plays a critical role in the laser's operation. Understanding these energy levels is essential for effective laser design and application. The discussion highlights the importance of chromium ion concentration in aluminum oxide for ruby laser efficiency.
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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