Laser refrigeration using exciplex resonances in gas filled hollow-core fibres

@inproceedings{Sommer2019LaserRU,
  title={Laser refrigeration using exciplex resonances in gas filled hollow-core fibres},
  author={Christian Sommer and Nicolas Y. Joly and Helmut Ritsch and Claudiu Genes},
  year={2019}
}
We theoretically study prospects and limitations of a new route towards macroscopic scale laser refrigeration based on exciplex-mediated frequency up-conversion in gas filled hollow-core fibres. Using proven quantum optical rate equations we model the dynamics of a dopant-buffer gas mixture filling an optically pumped waveguide. In the particular example of alkali-noble gas mixtures, recent high pressure gas cell setup experiments have shown that efficient kinetic energy extraction cycles… 
View PDF on arXiv
1 Citations
Background Citations
1

Figures and Tables from this paper

One Citation

Wildfire suppression technology: Exploration for a directed energy beam (DEB) attenuating electron transfer by cyclical vacuum subduction of dioxygen dication species, O22+
Modeling wildfire suppression technology, inspired by Einstein’s long quest for a final theory, is based on a Unified Field Mechanical (UFM) Ontological-Phase Topological Field Theory (OPTFT) derived…

References

SHOWING 1-10 OF 24 REFERENCES
Laser cooling by collisional redistribution of radiation
TLDR
Laser cooling of an atomic gas based on collisional redistribution of radiation is experimentally demonstrated using rubidium atoms in argon buffer gas at a pressure of 230 bar, and relative cooling by 66 K is demonstrated.
Laser cooling of solids to cryogenic temperatures
Laser radiation has been used to cool matter ranging from dilute gases to micromechanical oscillators. In Doppler cooling of gases, the translational energy of atoms is lowered through interaction…
Laser cooling of a solid from ambient temperature
Abstract A 250 μm diameter fibre of ytterbium-doped ZBLAN was cooled by 13 K from room temperature. The cooling was performed in vacuum to limit the thermal load on the fibre. 0.85 W of laser light…
Laser cooling of a solid by 65K starting from room temperature.
TLDR
In vacuo laser cooling of a solid from 301 to 236 K has been demonstrated, and measurement of the time constant for equilibration of the sample temperature is in excellent agreement with an analytic calculation of this quantity.
Laser cooling of a potassium–argon gas mixture using collisional redistribution of radiation
We study laser cooling of atomic gases by collisional redistribution, a technique applicable to ultradense atomic ensembles at a pressure of a few hundred bars. Frequent collisions of an optically…
Laser-induced cooling of broadband heat reservoirs
We explore, theoretically and experimentally, a method for cooling a broadband heat reservoir, via its laser-assisted collisions with two-level atoms followed by their fluorescence. This method is…
Solid-state optical refrigeration to sub-100 Kelvin regime
TLDR
The culmination of two decades of progress is presented, the record cooling to ≈ 91 K from room temperature, the first solid-state cooling below 100‬K below room temperature.
Condensed-phase optical refrigeration
We review progress on laser cooling of solids. The general process that enables cooling to occur is based on anti-Stokes fluorescence. Candidate materials for laser cooling are discussed, including…
Raman-Free, Noble-Gas-Filled Photonic-Crystal Fiber Source for Ultrafast, Very Bright Twin-Beam Squeezed Vacuum.
TLDR
A novel source of twin beams based on modulational instability in high-pressure argon-filled hollow-core kagome-style photonic-crystal fiber that outperforms all previously reported squeezed-vacuum twin-beam sources in terms of brightness and low mode content is reported.
Micromechanical oscillator ground-state cooling via resonant intracavity optical gain or absorption
We suggest possibilities for manipulation and ground-state cooling of micromechanical oscillators by resonant coupling of the mirror vibrations to narrow optical transitions of a designed material…
...
...