Development of a Rubidium Two-Photon Frequency Reference for Demonstration in Space
M. Eisebitt1,2, J. Kluge1,2, D.E. Kohl1,2, K. Döringshoff1,2, M. Krutzik1,2
Published in:
Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS 2025), Querétaro, Mexico, May 12-16, ISBN: 979-8-3315-1079-4 (2025).
Abstract:
Here we present our progress on the development of CRONOS, a space demonstrator for an optical clock based on a two-photon transition in rubidium together with a space- compatible optical frequency comb to deliver a low instability RF signal. Current estimates for the size, weight, and power of the entire payload predict a volume of 23 L, a weight of 23 kg, and a power consumption of 64 W. An elegant breadboard model has been built for the spectroscopy module.
1 Joint Lab Integrated Quantum Sensors, Ferdinand-Braun-Institut gGmbH, Berlin, Germany
2 Institut für Physik, Humboldt-Universität zu Berlin, Berlin, Germany
Keywords:
optical atomic clock; optical frequency reference; two-photon spectroscopy; space application; rubidium
© 2025 IEEE. All rights reserved, including rights for text and data mining, and training of artificial intelligence and similar technologies. Personal use is permitted, but republication/redistribution requires IEEE permission. See https://www.ieee.org/publications/rights/index.html for more information.
Rightslink® by Copyright Clearance Center
Full version in pdf-format.