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

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Homework Help Overview

The discussion revolves around understanding the relationship between the wavelength of light emitted by a laser and the energy levels involved in the lasing process. Participants are exploring concepts related to energy levels, photon emission, and the equations governing these phenomena.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss how to relate the wavelength of emitted light to the energy difference between two lasing levels, questioning the definitions and implications of lasing energy levels. There is an exploration of how energy levels correspond to photon energy and the terminology used in the context of lasers.

Discussion Status

The discussion is active, with participants providing insights into the relationship between energy levels and emitted photon energy. Some have expressed confusion over terminology, while others are clarifying concepts without reaching a definitive conclusion.

Contextual Notes

Participants are navigating the complexities of laser physics, including the definitions of lasing energy levels and their significance in photon emission. There is an acknowledgment of varying levels of understanding among participants regarding these concepts.

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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