Abstract
We demonstrate high resolution frequency comb spectroscopy in the extreme ultraviolet for the first time by exciting helium from the ground state using 51.56 nm pulses. Precision spectroscopy in the extreme ultraviolet on helium atoms and helium+ ions is very interesting as it could provide more stringent tests of quantum electrodynamics than currently possible with hydrogen. One problem is that spectroscopy in the extreme ultraviolet typically requires amplification and harmonic upconversion of visible light sources, which can introduce difficult to control systematic errors as a result of so called frequency-chirping effects [1,2].
Original language | English |
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Title of host publication | CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference |
DOIs | |
Publication status | Published - 2009 |
Event | CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference - Munich, Germany Duration: 14 Jun 2009 → 19 Jun 2009 |
Conference
Conference | CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference |
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Country/Territory | Germany |
City | Munich |
Period | 14/06/09 → 19/06/09 |