High harmonic frequency combs for high resolution spectroscopy
We generated a series of harmonics in a xenon gas jet inside a cavity seeded by pulses from a Ti:sapphire mode-locked laser with a repetition rate of 10.8 MHz. Harmonics up to 19th order at 43 nm were observed with plateau harmonics at the microW power level. An elaborate dispersion compensation sch...
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Veröffentlicht in: | Physical review letters 2008-06, Vol.100 (25), p.253901-253901, Article 253901 |
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creator | Ozawa, A Rauschenberger, J Gohle, Ch Herrmann, M Walker, D R Pervak, V Fernandez, A Graf, R Apolonski, A Holzwarth, R Krausz, F Hänsch, T W Udem, Th |
description | We generated a series of harmonics in a xenon gas jet inside a cavity seeded by pulses from a Ti:sapphire mode-locked laser with a repetition rate of 10.8 MHz. Harmonics up to 19th order at 43 nm were observed with plateau harmonics at the microW power level. An elaborate dispersion compensation scheme and the use of a moderate repetition rate allowed for this significant improvement in output power of the plateau harmonics of 4 orders of magnitude over previous results. With this power level and repetition rate, high-resolution spectroscopy in the extreme ultraviolet region becomes conceivable. An interesting target would be the 1S-2S transition in hydrogenlike He+ at 60 nm. |
doi_str_mv | 10.1103/physrevlett.100.253901 |
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title | High harmonic frequency combs for high resolution spectroscopy |
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