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Ultrastable silicon Fabry–Pérot cavity

An ultrastable optical laser based on a single-crystal silicon Fabry–Pérot cavity offers a fractional frequency instability of 1 × 10−16 on short timescales and supports a laser linewidth of less than 40 mHz at a wavelength of 1.5 μm.

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Figure 1: The 21-cm-long single-crystal silicon Fabry–Pérot cavity.


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Correspondence to Sébastien Bize.

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Bize, S. Ultrastable silicon Fabry–Pérot cavity. Nature Photon 6, 638–639 (2012).

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