Free-space optical-frequency comparison over rapidly moving links
The comparison of optical clocks from ground to space will provide unprecedented tests of fundamental physics. Such comparison is limited, though, by the relative motion between the clocks. The experiment in this Letter demonstrates a method to compensate for Doppler shifts over a rapidly moving free-space optical drone link, using an electro-optic modulator. The authors demonstrate Doppler-shift compensation up to 18 MHz, providing a path toward ground-to-space optical comparison.
Authors
- Shane Walsh (ORCID: https://orcid.org/0000-0002-5471-7635)
- David R. Gozzard (ORCID: https://orcid.org/0000-0001-8828-6469)
- Ayden McCann (ORCID: https://orcid.org/0009-0004-4019-6367)
- Sascha Schediwy (ORCID: https://orcid.org/0000-0001-9928-1364)
- Alex M. Frost
- Shawn McSorley (ORCID: https://orcid.org/0009-0002-6957-7660)
- Benjamin P. Dix-Matthews (ORCID: https://orcid.org/0000-0003-4702-8919)
- Skevos Karpathakis (ORCID: https://orcid.org/0000-0002-4030-9366)
Institutions
- International Centre for Radio Astronomy Research (AU)
Publication Details
- Journal
- Physical Review Applied
- Published
- 2025-02-18
- DOI
- https://doi.org/10.1103/physrevapplied.23.l021003
- Citations
- 5
- Primary Topic
- Advanced Fiber Laser Technologies
- Type
- article
- Field-Weighted Citation Impact
- 6.23