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Guidelines for designs for ultrastable laser with mathbf{10⁻¹⁷} fractional frequency instability

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arxiv 2504.06213 v1 pith:IVB4QWCM submitted 2025-04-08 physics.optics physics.ins-det

Guidelines for designs for ultrastable laser with mathbf{10⁻¹⁷} fractional frequency instability

classification physics.optics physics.ins-det
keywords ultrastablelasersfractionalfrequencygenerationguidelineslasernext
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Lasers with long coherence time and narrow linewidth are an essential tool for quantum sensors and clocks. Ultrastable cavities and laser systems are now commercially available with fractional frequency instabilities in the mid $10^{-16}$ range. This document aims to provide technical guidance for researchers starting in the field of ultrastable lasers and to give an outlook toward the next generation of improved ultrastable lasers. These guidelines have arisen from the scope of the EMPIR project ``Next generation ultrastable lasers'' ( https://www.ptb.de/empir2021/nextlasers ) with contributions from the European project partners.

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Cited by 2 Pith papers

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  1. Laser stabilized to a room temperature cavity with AlGaAs coatings reaching $4.2 \times 10^{-17}$ fractional frequency instability

    physics.optics 2026-07 unverdicted novelty 7.0

    Room-temperature cavity with AlGaAs coatings achieves 4.2×10^{-17} fractional frequency instability, with birefringence fluctuations identified as a leading noise source and acceleration noise mitigated by feed-forward.

  2. Cordierite-based optical resonators with extremely low thermal expansion

    physics.optics 2026-03 conditional novelty 7.0

    Cordierite-based resonators with ULE mirrors reach effective CTE near zero over tens of Kelvin via mirror deflection compensating spacer expansion.