Michaela Ellmeier
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Investigating the hyperfine systematic error and relative phase in low spin-polarization alkali FID magnetometers Open
Alkali-metal optically-pumped magnetometers are prone to inaccuracies arising from the overlap of the average F = I + 1/2 and F = I - 1/2 ground-state Zeeman resonances. We employ density-matrix simulations and experiments to investigate h…
View article: Lower magnetic field measurement limit of the coupled dark state magnetometer
Lower magnetic field measurement limit of the coupled dark state magnetometer Open
The Coupled Dark State Magnetometer (CDSM) is an optically pumped magnetometer. For the Jupiter Icy Moons Explorer mission, the CDSM and two fluxgate magnetometers are combined in the J-MAG instrument to measure the static and low frequenc…
View article: Accuracy of the scalar magnetometer aboard ESA's JUICE mission
Accuracy of the scalar magnetometer aboard ESA's JUICE mission Open
This paper discusses the accuracy of the scalar Coupled Dark State Magnetometer on board the Jupiter Icy Moons Explorer (JUICE) mission of the European Space Agency (ESA). The scalar magnetometer, referred to as MAGSCA, is part of the J-MA…
View article: Accuracy of the Scalar Magnetometer aboard ESA's JUICE Mission
Accuracy of the Scalar Magnetometer aboard ESA's JUICE Mission Open
The presentation discusses the accuracy of the scalar Coupled Dark State Magnetometer on board the Jupiter Icy Moon Explorer (JUICE) mission of the European Space Agency. The scalar magnetometer MAGSCA is part of the J-MAG instrument.MAGSC…
View article: Comment on egusphere-2023-3073
Comment on egusphere-2023-3073 Open
Abstract. The paper discusses the accuracy of the scalar Coupled Dark State Magnetometer on board the Jupiter Icy Moon Explorer (JUICE) mission of the European Space Agency. The scalar magnetometer, referred to as MAGSCA, is part of the J-…
View article: Comment on egusphere-2023-3073
Comment on egusphere-2023-3073 Open
Abstract. The paper discusses the accuracy of the scalar Coupled Dark State Magnetometer on board the Jupiter Icy Moon Explorer (JUICE) mission of the European Space Agency. The scalar magnetometer, referred to as MAGSCA, is part of the J-…
View article: Accuracy of the Scalar Magnetometer aboard ESA's JUICE Mission
Accuracy of the Scalar Magnetometer aboard ESA's JUICE Mission Open
The paper discusses the accuracy of the scalar Coupled Dark State Magnetometer on board the Jupiter Icy Moon Explorer (JUICE) mission of the European Space Agency. The scalar magnetometer, referred to as MAGSCA, is part of the J-MAG instru…
View article: Experimental and theoretical investigations on the modulation capabilities of a sample of vertical cavity surface emitting laser diodes for atomic vapour applications
Experimental and theoretical investigations on the modulation capabilities of a sample of vertical cavity surface emitting laser diodes for atomic vapour applications Open
This paper discusses various frequency modulation and intensity modulation capabilities within a sample of direct laser current modulated identical vertical cavity surface emitting laser diodes. The presented analysis is based on measureme…
View article: Frequency shift compensation for single and dual laser beam pass sensors of a coherent population trapping resonance based coupled dark state magnetometer
Frequency shift compensation for single and dual laser beam pass sensors of a coherent population trapping resonance based coupled dark state magnetometer Open
The Coupled Dark State Magnetometer is an atomic magnetometer designed for magnetic field measurements in space. Its measurement principle is based on the excitation of coupled dark state resonances prepared via the coherent population tra…
View article: Experimental and Theoretical Investigations on the Modulation Capabilities of Vertical Cavity Surface Emitting Laser Diodes for Atomic Vapour Applications
Experimental and Theoretical Investigations on the Modulation Capabilities of Vertical Cavity Surface Emitting Laser Diodes for Atomic Vapour Applications Open
This paper discusses various frequency modulation and intensity modulation capabilities within a sample of direct laser current modulated identical vertical cavity surface emitting laser diodes. The presented analysis is based on measureme…
View article: Design and test of the optical fiber assemblies for the scalar magnetic field sensor aboard the JUICE mission
Design and test of the optical fiber assemblies for the scalar magnetic field sensor aboard the JUICE mission Open
A set of optical fiber assemblies has been developed and successfully qualified for its use on a European space science mission to the icy moons of Jupiter (Jupiter Icy Moons Explorer, JUICE), to be launched in 2022. The paper gives an ove…
View article: Magnetic field turbulence studies aboard the China Seismo-Electromagnetic Satellite and related ground based phenomena
Magnetic field turbulence studies aboard the China Seismo-Electromagnetic Satellite and related ground based phenomena Open
With a new type of a scalar magnetometer, the Coupled Dark State Magnetometer (CDSM) aboard the China Seismo-Electromagnetic Satellite (CSES) mission, we observed magnetic field fluctuations in the period mid July 2018 until mid November 2…
View article: In-orbit results of the Coupled Dark State Magnetometer aboard the China Seismo-Electromagnetic Satellite
In-orbit results of the Coupled Dark State Magnetometer aboard the China Seismo-Electromagnetic Satellite Open
The China Seismo-Electromagnetic Satellite (CSES) was launched in February 2018 into a polar, sun-synchronous, low Earth orbit. It provides the first demonstration of the Coupled Dark State Magnetometer (CDSM) measurement principle in spac…
View article: Satellite and ground-based magnetic field observations related to volcanic eruptions
Satellite and ground-based magnetic field observations related to volcanic eruptions Open
In this study we investigate volcanic eruption phenomena related to ionospheric disturbances, e.g. Heki (2006) used total electron content (TEC) measurements for this task. In particular, a model is developed how discharge phenomena (e.g. …
View article: In-orbit results of the Coupled Dark State Magnetometer aboard theChina Seismo-Electromagnetic Satellite
In-orbit results of the Coupled Dark State Magnetometer aboard theChina Seismo-Electromagnetic Satellite Open
The China Seismo-Electromagnetic Satellite (CSES) was launched in February 2018 into a polar, sun-synchronous, low Earth orbit. It provides the first demonstration of the Coupled Dark State Magnetometer (CDSM) measurement principle in spac…
View article: Development of Space Magnetometers in Austria
Development of Space Magnetometers in Austria Open
With spaceborne magnetic field measurements it is possible to investigate the interior of planets,moons and asteroids which have either an intrinsic or a crustal magnetic field. Furthermore, preciseknowledge of the magnetic field is essent…
View article: Coupled dark state magnetometer for the China Seismo-Electromagnetic Satellite
Coupled dark state magnetometer for the China Seismo-Electromagnetic Satellite Open
The coupled dark state magnetometer (CDSM) is an optically pumped scalar magnetometer, which is based on two-photon spectroscopy of free alkali atoms. This paper introduces the measurement principle, instrument design, required resources a…
View article: Accelerated endurance test of single-mode vertical-cavity surface-emitting lasers under vacuum used for a scalar space magnetometer
Accelerated endurance test of single-mode vertical-cavity surface-emitting lasers under vacuum used for a scalar space magnetometer Open
We performed an endurance test with single-mode vertical-cavity surface-emitting lasers (VCSEL) under vacuum condition and increased operational parameters (laser current and laser temperature) to accelerate the aging of the lasers. During…
View article: Long-term vacuum tests of single-mode vertical cavity surface emitting laser diodes used for a scalar magnetometer
Long-term vacuum tests of single-mode vertical cavity surface emitting laser diodes used for a scalar magnetometer Open
Scalar magnetometers measure the magnitude of the magnetic field, while vector magnetometers (mostly fluxgate magnetometers) produce three-component outputs proportional to the magnitude and the direction of the magnetic field. While scala…