Fabry Perot Interferometer

Abron AR-1016-I

Fabry–perot interferometer or etalon is made of with two parallel highly reflecting mirrors. As function of wavelength interference between the multiple reflections of light between the two reflecting surfaces. Constructive interference occurs if the

Fabry–perot interferometer or etalon is made of with two parallel highly reflecting mirrors. As function of wavelength interference between the multiple reflections of light between the two reflecting surfaces. Constructive interference occurs if the transmitted beams are in phase, and this corresponds to a high-transmission peak of the etalon. If the transmitted beams are out-of-phase, destructive interference occurs and this corresponds to a transmission minimum. This exhibits peaks and falls in transmission corresponding to resonances of wavelength. It is named after charles fabry and alfred perot.