| Title: |
Simple, highly stable transfer cavity for laser stabilization based on a carbon-fiber reinforced polymer spacer |
| Authors: |
Zwettler, T.; Xue, Z.; Bolognini, G.; Bühler, T.; Hruby, L.; Fabre, A.; Donner, T.; Brantut, J.-P. |
| Contributors: |
Swiss State Secretariat for Education, Research and Innovation; Swiss National Science Foundation; EPFL Center for Quantum Science and Engineering |
| Source: |
Review of Scientific Instruments ; volume 96, issue 2 ; ISSN 0034-6748 1089-7623 |
| Publisher Information: |
AIP Publishing |
| Publication Year: |
2025 |
| Description: |
We describe the design and operation of a high-stability Fabry–Pérot cavity, for laser stabilization in cavity quantum-electrodynamics experiments. Our design is based on an inexpensive and readily available uniaxial carbon-fiber reinforced polymer tube spacer, featuring an ultra-low thermal expansion coefficient. As a result, our 136 mm-long cavity, which has a finesse of 5160, shows a coefficient of thermal expansion of 1.6 × 10−6 K−1. Enclosing it in a hermetic chamber at room-pressure and using simple temperature stabilization, we observe absolute frequency excursions over a full day below 50 MHz for a laser operating at 446.785 THz. The frequency stability is limited by the imperfect thermal isolation from the environment and can be corrected using a built-in piezoelectric actuator. In addition, we discuss a different variant of this design and identify future improvements. Our system provides a cost-effective and robust solution for transferring laser stability over different wavelengths, as well as for linewidth reduction or spectral filtering of CW laser sources for applications in quantum science. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1063/5.0246106 |
| DOI: |
10.1063/5.0246106/20416079/023005_1_5.0246106.pdf |
| Availability: |
https://doi.org/10.1063/5.0246106; https://pubs.aip.org/aip/rsi/article-pdf/doi/10.1063/5.0246106/20416079/023005_1_5.0246106.pdf |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ ; https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.13CC2B65 |
| Database: |
BASE |