Answer to Question #155634 in Optics for kaashfi

Question #155634

For an optical resonator, what is the physical significance of the equation, n(ν)dν = 8π(ν3/c3) dν?


1
Expert's answer
2021-01-19T11:59:34-0500

Answer

The given equation

"n(\u03bd)d\u03bd = 8\u03c0(\u03bd3\/c3) d\\nu"

The physical meaning of above is that

This shows average number of photons between frequency range "\\nu"

And "\\nu +d\\nu" .

This equation also tells Number of states per unit volume.



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