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## Homework Statement

Hi,

I need to know the correct SI units for Einstein Coefficients (A and B) for stimulated emission (say laser).

The equation I'm on about is

## Homework Equations

[tex]\frac{A}{B}[/tex] = [tex]\frac{8\pi h\nu^{3}}{c^{3}}[/tex]

## The Attempt at a Solution

after some scribbling I got to [tex]\frac{A}{B}[/tex] = [tex]\frac{Js}{m^{3}}[/tex]

where J is joules, s seconds and m is meter.

any help appreciated. thanks

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