8×10-17 fractional laser frequency instability with a long room-temperature cavity

Sebastian Häfner, Stephan Falke, Christian Grebing, Stefan Vogt, Thomas Legero, Mikko Merimaa, Christian Lisdat, Uwe Sterr

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Abstract

We present a laser system based on a 48 cm long optical glass resonator. The large size requires a sophisticated thermal control and optimized mounting design. A self-balancing mounting was essential to reliably reach sensitivities to acceleration of below Δν/ν < 2 × 10-10/g in all directions. Furthermore, fiber noise cancellations from a common reference point near the laser diode to the cavity mirror and to additional user points (Sr clock and frequency comb) are implemented. Through comparison with other cavity-stabilized lasers and with a strontium lattice clock, instability of below 1 × 10-16 at averaging times from 1 to 1000 s is revealed.

Original languageEnglish
Pages (from-to)2112-2115
Number of pages4
JournalOptics Letters
Volume40
Issue number9
DOIs
Publication statusPublished - 1 Jan 2015
MoE publication typeA1 Journal article-refereed

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Häfner, S., Falke, S., Grebing, C., Vogt, S., Legero, T., Merimaa, M., Lisdat, C., & Sterr, U. (2015). 8×10-17 fractional laser frequency instability with a long room-temperature cavity. Optics Letters, 40(9), 2112-2115. https://doi.org/10.1364/OL.40.002112