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Hybrid Frequency Stabilization and Determination Unit Based on a High-Finesse Optical Cavity and Molecular Iodine

Wegehaupt, Timm and Sachit, Sariga and Müller, Vitali and Misfeldt, Malte and Heinzel, Gerhard and Sanjuan, Jose and Schuldt, Thilo and Braxmaier, Claus and Grosse, Jens (2025) Hybrid Frequency Stabilization and Determination Unit Based on a High-Finesse Optical Cavity and Molecular Iodine. In: IEEE 2025 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium, pp. 1-4. IEEE. 2025 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control, 2025-05-12 - 2025-05-16, Querétaro, Mexiko. doi: 10.1109/EFTF/IFCS64367.2025.11194326. ISBN 979-8-3315-1079-4. ISSN 2327-1949.

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Official URL: https://dx.doi.org/10.1109/EFTF/IFCS64367.2025.11194326

Abstract

This paper presents the latest developments of a hybrid system offering frequency stability at the 10-15-level and simultaneous absolute frequency determination for metrology applications. The system combines a high-finesse optical cavity with an iodine vapor cell based absolute frequency readout unit. The optical cavity setup within the hybrid system is developed with emphasis on space compatibility. It utilizes a compact optical circulator-based in-coupling technique and fulfills the frequency stability requirements of ESA’s NGGM mission. The absolute frequency readout unit complements the system as a laboratory setup, utilizing an offset sideband lock in conjunction with a simplified absorption spectroscopy unit based on a third derivative locking technique.

Item URL in elib:https://elib.dlr.de/221867/
Document Type:Conference or Workshop Item (Speech)
Title:Hybrid Frequency Stabilization and Determination Unit Based on a High-Finesse Optical Cavity and Molecular Iodine
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Wegehaupt, TimmUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sachit, SarigaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Müller, VitaliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Misfeldt, MalteUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Heinzel, GerhardUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sanjuan, JoseUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schuldt, ThiloThilo.Schuldt (at) dlr.deUNSPECIFIEDUNSPECIFIED
Braxmaier, Clausclaus.braxmaier (at) dlr.deUNSPECIFIEDUNSPECIFIED
Grosse, JensUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date:2025
Journal or Publication Title:IEEE 2025 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI:10.1109/EFTF/IFCS64367.2025.11194326
Page Range:pp. 1-4
Publisher:IEEE
ISSN:2327-1949
ISBN:979-8-3315-1079-4
Status:Published
Keywords:optical cavity, vapor cell, hybrid system, NGGM, frequency stabilization, offset sideband lock, optical metrology
Event Title:2025 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control
Event Location:Querétaro, Mexiko
Event Type:international Conference
Event Start Date:12 May 2025
Event End Date:16 May 2025
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - ADVANTAGE - Optical Watches, R - Project COMPASSO, R - GRACE-I
Location: Bremen , Ulm
Institutes and Institutions:Institute of Quantum Technologies > Quantum Metrology
Deposited By: Knosp, Monja-Maike
Deposited On:19 Jan 2026 21:17
Last Modified:19 Jan 2026 21:17

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