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  Thresholdless deep and vacuum ultraviolet Raman frequency conversion in hydrogen-filled photonic crystal fiber

Mridha, M. K., Novoa, D., Hosseini, P., & Russell, P. S. J. (2019). Thresholdless deep and vacuum ultraviolet Raman frequency conversion in hydrogen-filled photonic crystal fiber. Optica, 6(6), 731-734. doi:10.1364/OPTICA.6.000731.

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 Creators:
Mridha, Manoj K.1, Author           
Novoa, David1, Author           
Hosseini, Pooria1, Author           
Russell, Philip St. J.1, Author           
Affiliations:
1Russell Division, Max Planck Institute for the Science of Light, Max Planck Society, ou_2364721              

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 Abstract: Coherent ultraviolet light has many uses, for example, in the study of molecular species relevant in biology and chemistry. Very few, if any, laser materials offer ultraviolet transparency along with damage-free operation at high-photon energies and laser power. Here we report efficient generation of narrowband deep and vacuum ultraviolet light using hydrogen-filled hollow-core photonic crystal fiber. Pumping above the stimulated Raman threshold at 532 nm, coherent molecular vibrations are excited in the gas, permitting thresholdless wavelength conversion in the ultraviolet with efficiencies close to 60%. The system is uniquely pressure tunable, allows spatial structuring of the out-coupled radiation, and shows excellent performance in the vacuum ultraviolet. As the underlying scattering process is effectively linear, our approach can also in principle operate at the single-photon level, when all other alternatives are extremely inefficient.

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 Dates: 2019-04-172019-02-052019-04-292019-05-28
 Publication Status: Issued
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 Identifiers: DOI: 10.1364/OPTICA.6.000731
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Title: Optica
  Abbreviation : Optica
Source Genre: Journal
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Publ. Info: Washington, DC, United States : The Optical Society
Pages: - Volume / Issue: 6 (6) Sequence Number: - Start / End Page: 731 - 734 Identifier: ISSN: 2334-2536
CoNE: https://pure.mpg.de/cone/journals/resource/2334-2536