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Automatic control of the spacing of Fabry-Perot interferometers
1CSIRO, Division of Physics, NationalStandards Laboratory, Sydney, Australia.
Applied Optics
|January 9, 2010
Abstract:
The automatic control of the spacing of Fabry-Perot interferometers to transmit at a given wavelength is discussed, and an interferometer is described in which the plates are maintained parallel to within the accuracy of the plates themselves and at a preset spacing. The variation in mean spacing over test periods of several hours has not exceeded +/- 0.7 nm despite temperature fluctuations and other uncontrolled environmental conditions.
