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Updated: Jun 22, 2026
Implementation of a Reference Interferometer for Nanodetection
Published on: April 26, 2014
A vibration-insensitive optical cavity and absolute determination of its ultrahigh stability
Y N Zhao1, J Zhang, A Stejskal
1Max Planck Institute for the Science of Light, and Institute of Optics, Information and Photonics, University Erlangen-Nuremberg, Günther-Scharowsky-Str. 1 / Building 24, 91058 Erlangen, Germany.
Abstract:
We use the three-cornered-hat method to evaluate the absolute frequency stabilities of three different ultrastable reference cavities, one of which has a vibration-insensitive design that does not even require vibration isolation. An Nd:YAG laser and a diode laser are implemented as light sources. We observe approximately 1 Hz beat note linewidths between all three cavities. The measurement demonstrates that the vibration-insensitive cavity has a good frequency stability over the entire measurement time from 100 ms to 200 s. An absolute, correlation-removed Allan deviation of 1.4 x 10(-15) at s of this cavity is obtained, giving a frequency uncertainty of only 0.44 Hz.
