Quantum interference spectroscopy in the vacuum ultraviolet

K. S E Eikema*, R. Th Zinkstok, S. Witte, W. Hogervorst, W. Ubachs

*Corresponding author for this work

Research output: Chapter in Book / Report / Conference proceedingConference contributionAcademicpeer-review


With two experiments on respectively krypton at 2 x 212 nm and xenon at 125 nm we have demonstrated the method of quantum interference spectroscopy in the deep- and vacuum-ultraviolet. Multiple pulses from a frequency comb laser are amplified and frequency converted and used in a Ramsey-like direct excitation scheme. In the Kr experiment we achieved a 150 kHz accuracy for isotope shift values and a 3.5 MHz accuracy for the absolute transition frequency. With the Xe experiment we demonstrated that the same method can be used in combination with frequency upconversion in a gas without significant distortion of the phase coherence, therefore allowing sub-MHz resolution spectroscopy at VUV and XUV wavelengths.

Original languageEnglish
Title of host publicationProceedings of the 20th European Frequency and Time Forum, EFTF 2006
Number of pages8
Publication statusPublished - 2006
Event20th European Frequency and Time Forum, EFTF 2006 - Braunschweig, Germany
Duration: 27 Mar 200630 Mar 2006


Conference20th European Frequency and Time Forum, EFTF 2006


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