Fabry-Perot Interferometer


The Fabry-Perot interferometer is commonly used as a narrow-bandpass filter or as an instrument to measure spectral linewidths.

Fabry-Perot interferometer (etalon)

Fabry-Perot interferometers that cannot be scanned are called etalons.

Schematic of a Fabry-Perot etalon

Transmission through a Fabry-Perot interferometer as a function of wavelength

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Copyright © 1996 by Brian M. Tissue

updated 2/21/96