Optical clock technologies for global navigation satellite systems

@article{Schuldt2021OpticalCT,
  title={Optical clock technologies for global navigation satellite systems},
  author={Thilo Schuldt and Martin Gohlke and Markus Oswald and Jan W{\"u}st and Tim Blomberg and K. D{\"o}ringshoff and Ahmad Bawamia and Andreas Wicht and Matthias Lezius and Kai Voss and Markus C. Krutzik and Sven Herrmann and Evgeny V. Kovalchuk and Achim Peters and Claus Braxmaier},
  journal={GPS Solutions},
  year={2021},
  volume={25}
}
Future generations of global navigation satellite systems (GNSSs) can benefit from optical technologies. Especially optical clocks could back-up or replace the currently used microwave clocks, having the potential to improve GNSS position determination enabled by their lower frequency instabilities. Furthermore, optical clock technologies—in combination with optical inter-satellite links—enable new GNSS architectures, e.g., by synchronization of distant optical frequency references within the… 
Compact plug and play optical frequency reference device based on Doppler-free spectroscopy of rubidium vapor.
Compactness, robustness and autonomy of optical frequency references are prerequisites for reliable operation in mobile systems, on ground as well as in space. We present a standalone plug and play
Short-term stability of Cs microcell-stabilized lasers using dual-frequency sub-Doppler spectroscopy
The combination of atomic spectroscopy, integrated photonics, and microelectromechanical systems leads the way to the demonstration of microcell-based optical atomic clocks. Here, we report the
A microcontroller based self-locking laser system
We present a self-locking laser system that does not require operator interventions. The system automatically finds a desired atomic transition and subsequently locks to it. Moreover, it has the
Electromagnetic Viscosity in Complex Structured Environments: From black-body to Quantum Friction
We investigate the nonconservative open-system dynamics of an atom in a generic complex structured electromagnetic environment at temperature T . In such systems, when the atom moves along a
Tellurium spectrometer for 1S0-1P1 transitions in strontium and other alkaline-earth atoms.
We measure the spectrum of tellurium-130 in the vicinity of the 461 nm S01-P11 cycling transition in neutral strontium, a popular element for atomic clocks, quantum information, and

References

SHOWING 1-10 OF 45 REFERENCES
Advanced technologies for satellite navigation and geodesy
In-Orbit-Verification of Optical Clock Technologies
TLDR
A specific mission concept for in-orbit verification of optical frequency references on a small satellite in low-Earth orbit, called COFROS (Compact Optical Frequency References on a Satellite).
Miniaturized optical frequency reference for next-generation portable optical clocks.
TLDR
The advanced optical integration presented here demonstrates a key step towards the development of compact optical clocks and the broad dissemination of SI-traceable wavelength references.
Single-ion, transportable optical atomic clocks
For the past 15 years, tremendous progress within the fields of laser stabilization, optical frequency combs and atom cooling and trapping have allowed the realization of optical atomic clocks with
Development of a strontium optical lattice clock for the SOC mission on the ISS
The ESA mission “Space Optical Clock” project aims at operating an optical lattice clock on the ISS in approximately 2023. The scientific goals of the mission are to perform tests of fundamental
Space-borne frequency comb metrology
Precision time references in space are of major importance to satellite-based fundamental science, global satellite navigation, earth observation, and satellite formation flying. Here we report on
A flight-like absolute optical frequency reference based on iodine for laser systems at 1064 nm
We present an absolute optical frequency reference based on precision spectroscopy of hyperfine transitions in molecular iodine $$^{127}$$127I$$_2$$2 for laser systems operating at 1064 nm. A
The on-board Galileo clocks: Rubidium standard and Passive Hydrogen Maser - current status and performance
Galileo program is approved by the European Commission and the European Space Agency (ESA). The activities related to GSTBV2 experimental satellite provide the first results and the implementation of
Compact Optical Atomic Clock Based on a Two-Photon Transition in Rubidium
Extra-laboratory atomic clocks are necessary for a wide array of applications (e.g. satellite-based navigation and communication). Building upon existing vapor cell and laser technologies, we
Space interferometry application of laser frequency stabilization with molecular iodine.
TLDR
Noise performance of a NPRO laser stabilized to iodine using frequency modulation spectroscopy and an Allan standard deviation of 10(-14) over 100 s are evaluated and simplified optical configurations and the radiation hardness of the frequency-doubling crystals have also been investigated.
...
...