ATIS Telecom Glossary
Tuesday, July 29, 2014

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transition frequency
The frequency associated with the difference between two discrete energy levels in an atomic system, given by equation 48\where f 2,1 is the frequency associated with the difference between two energy levels, E2 and E1 (E2 > E1), and is Planck's constant. Note: If a transition from E2 to E1 occurs, a photon with frequency f 2,1 is likely to be emitted. If the atomic system is at energy level E1, and a photon of frequency f 2,1 is absorbed, the energy level will be raised to E2. [From Weik '89]

 

 

 

 

 

 

 

 

 

 



 
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