If you know the wavelength of light emitted by a laser how can you know

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SUMMARY

The discussion focuses on understanding the relationship between the wavelength of light emitted by a laser and the energy levels involved in the lasing process. The key equations referenced include E = hf, which relates energy to frequency, and the concept that the emitted photon energy corresponds to the difference between two lasing energy levels. Participants clarify that the lasing energy levels represent the states electrons transition between to emit photons, emphasizing the equivalence of emitted photon energy and the energy difference between these levels.

PREREQUISITES
  • Understanding of quantum mechanics principles, specifically energy quantization.
  • Familiarity with the equation E = hf, where E is energy, h is Planck's constant, and f is frequency.
  • Knowledge of laser operation and the concept of lasing energy levels.
  • Basic grasp of wave-particle duality, particularly in the context of light.
NEXT STEPS
  • Study the relationship between frequency and wavelength in electromagnetic waves.
  • Explore the concept of photon energy and its calculation using E = hf.
  • Research the principles of laser operation, focusing on energy level transitions.
  • Learn about the role of Planck's constant in quantum mechanics and its applications in photonics.
USEFUL FOR

Students in physics or engineering, particularly those studying optics, quantum mechanics, or laser technology, will benefit from this discussion.

kashiark
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Homework Statement


How can you know "the difference between the two lasing energy levels?"


Homework Equations


n(lambda) = 2(pi)r
E = hf
mvr = n(h-bar)

The Attempt at a Solution


no clue
 
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You know that E = hf. How is the the frequency related to the wavelength?
 
I know how to find the energy of the given wavelength, but how do I find the other lasing energy level? What is a lasing energy anyway, and why are there 2?
 
You are looking for the difference between energy levels. How is the difference related to the emitted photon energy?
 
If u r talking abt 2 levels laser, then the emitted photon energy is the same as the difference between th two lasing levels
 
The two are equivalent; so the lasing energy levels are just the levels that the electrons jump to release the photon?
 
Yup.
 
That's simple enough; I was just confused over the terminology; thanks!
 

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