Temperature-insensitive tunable and stable Fabry-Perot cavity for atomic physics
Abstract
Optical Fabry-Perot cavities are crucial tools for metrology experiments, where they achieve extreme length stability, and for some atomic physics experiments, where tunability to atomic transitions enables atom-light interactions. However, achieving both frequency stability and tunability in a single cavity has remained a challenge, forcing metrology experiments exploiting atom-cavity interactions to rely on external active feedback systems to stabilize the length of the cavity. Here, we describe a piezoelectrically-tunable cavity with a cancellation of the coefficient of thermal expansion at around 5∘C, achieving fractional frequency instabilities at the 4× 10−13 level for 1~s integration time. This advance eliminates the need for external stabilization in many atom-cavity experiments, making this design ideal for applications such as ultra-stable superradiant lasers and other cavity quantum electrodynamics experiments.
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BibTeX
@article{ruelle2026temperatureinsensitive,
title = {{Temperature-insensitive tunable and stable Fabry-Perot cavity for atomic physics}},
author = {Joshua Ruelle and Martin Hauden and Francisco Ponciano-Ojeda and Marion Delehaye},
journal = {SciPost Physics Core},
year = {2026},
month = sep,
doi = {10.21468/scipostphyscore.9.3.054},
eprint = {2603.11817},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05654758v2},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Temperature-insensitive tunable and stable Fabry-Perot cavity for atomic physics
AU - Joshua Ruelle
AU - Martin Hauden
AU - Francisco Ponciano-Ojeda
AU - Marion Delehaye
PY - 2026
DA - 2026/09/01
JO - SciPost Physics Core
DO - 10.21468/scipostphyscore.9.3.054
UR - https://hal.science/hal-05654758v2
AB - Optical Fabry-Perot cavities are crucial tools for metrology experiments, where they achieve extreme length stability, and for some atomic physics experiments, where tunability to atomic transitions enables atom-light interactions. However, achieving both frequency stability and tunability in a single cavity has remained a challenge, forcing metrology experiments exploiting atom-cavity interactions to rely on external active feedback systems to stabilize the length of the cavity. Here, we describe a piezoelectrically-tunable cavity with a cancellation of the coefficient of thermal expansion at around 5^∘C, achieving fractional frequency instabilities at the 4× 10^−13 level for 1~s integration time. This advance eliminates the need for external stabilization in many atom-cavity experiments, making this design ideal for applications such as ultra-stable superradiant lasers and other cavity quantum electrodynamics experiments.
SN - 2666-9366
ER -