解説Resonant enhancement factor of a Fabry Perot interferometer.png
English: Resonance enhancement in a Fabry-Pérot resonator. [1] (top) Spectrally dependent internal resonance enhancement, equaling the generic Airy distribution . Light launched into the resonator is resonantly enhanced by this factor. For the curve with , the peak value is at , outside the scale of the ordinate. (bottom) Spectrally dependent external resonance enhancement, equaling the Airy distribution . Light incident upon the resonator is resonantly enhanced by this factor.