A vibration-insensitive optical cavity and absolute determination of its ultrahigh stability

Details A vibration-insensitive optical cavity and absolute determination of its ultrahigh stability A vibration-insensitive optical cavity and absolute determination of its ultrahigh stability

2009-04-06

arxiv.org/abs/0904.0865v1

Opt. Express 17 (2009) 8970_8982

Physics

Optics

13 pages, 10 figures

Scientific paper

10.1364/OE.17.008970

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 $\sim1$ 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 $\mu$s to 200 s. An absolute, correlation-removed Allan deviation of $1.4\times10^{-15}$ at 1 s of this cavity is obtained, giving a frequency uncertainty of only 0.44 Hz.

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