Frequency comb metrology at PHz frequencies: Precision in the extreme ultraviolet
| Autor: | Ch. Gohle, D. Z. Kandula, Kjeld S. E. Eikema, Wim Ubachs, J. Morgenweg, Itan Barmes, T. J. Pinkert |
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| Přispěvatelé: | Atoms, Molecules, Lasers, LaserLaB - Physics of Light, Physics and Astronomy |
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Argon business.industry chemistry.chemical_element Physics::Optics Laser law.invention Wavelength Frequency comb Neon Optics chemistry law Extreme ultraviolet Femtosecond Physics::Atomic and Molecular Clusters Optoelectronics Physics::Atomic Physics SDG 7 - Affordable and Clean Energy business Helium |
| Zdroj: | 2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011 Gohle, C, Kandula, D Z, Pinkert, T J, Morgenweg, J, Barmes, I, Ubachs, W & Eikema, K S E 2011, Frequency comb metrology at PHz frequencies : Precision in the extreme ultraviolet . in 2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011 ., 6050328, 2011 30th URSI General Assembly and Scientific Symposium, URSIGASS 2011, Istanbul, Turkey, 13/08/11 . https://doi.org/10.1109/URSIGASS.2011.6050328 |
| DOI: | 10.1109/URSIGASS.2011.6050328 |
| Popis: | The capability of frequency-comb (FC) lasers to precisely measure optical frequencies is extended to the multiple-PHz domain. This frequency region, which covers the extreme ultraviolet (XUV, wavelengths shorter than 100 nm), was previously not accessible to these devices. Frequency comb generation is shown for 51-85 nm by amplification and coherent up-conversion of a pair of pulses originating from a near-infrared femtosecond FC laser. Moreover, Ramsey-like signals with up to 61% contrast are observed when the XUV comb is scanned over transitions in argon, neon and helium, resulting in an 8-fold improved determination of the ground state ionization energy of helium. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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