1.

What is the unit for the coefficient of stimulated emission?

A. s<sup>-2</sup>
B. m<sup>3</sup> s<sup>-2</sup>
C. J<sup> 1</sup> m<sup>3</sup>
D. J<sup> 1</sup> m<sup>3</sup> s<sup>-2</sup>
Answer» E.


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