Ramsey-comb spectroscop y on molecular deuterium and hydrogen-like helium: experimental and n umerical studies
There exist several physical phenomena that c annot currently be accounted for by physics theories. Therefore, spec troscopists search for ever finer details in atomic and molecular spe ctra hoping to find clues to these phenomena. The work described in t his thesis contributes to this research effort. We present experiment al results on spectroscopy of the deep ultraviolet 202 nm X - EF tran sition in molecular deuterium, measured with an uncertainty of 19 kHz with the Ramsey-comb spectroscopy technique. We also present experim ental results for the first laser excitation of the 1S-2S transition in He+ at 32 nm and present an in-depth feasibility study of Ramsey-c omb spectroscopy of the 1S-2S transition on trapped and laser-cooled He+, featuring extensive numerical results mapping out the parameter space in which a precision measurement is expected to be possible. Ad ditionally, we present a Graphics Processing Unit-accelerated routine to simulate the propagation of intense ultrashort pulses through an atomic gas which achieves significant (up to almost 200) speed-up fac tors relative to a naive Central Processing Unit implementation of th e same routine.
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DESCRIPTION: There exist several physical phenomena that cannot curren tly be accounted for by physics theories. Therefore, spectroscopists search for ever finer details in atomic and molecular spectra hoping to find clues to these phenomena. The work described in this thesis c ontributes to this research effort. We present experimental results o n spectroscopy of the deep ultraviolet 202 nm X - EF transition in mo lecular deuterium, measured with an uncertainty of 19 kHz with the Ra msey-comb spectroscopy technique. We also present experimental result s for the first laser excitation of the 1S-2S transition in He+ at 32 nm and present an in-depth feasibility study of Ramsey-comb spectros copy of the 1S-2S transition on trapped and laser-cooled He+, featuri ng extensive numerical results mapping out the parameter space in whi ch a precision measurement is expected to be possible. Additionally, we present a Graphics Processing Unit-accelerated routine to simulate the propagation of intense ultrashort pulses through an atomic gas w hich achieves significant (up to almost 200) speed-up factors relativ e to a naive Central Processing Unit implementation of the same routi ne. More information on the thesis Ramsey-comb spectroscopy o n molecular deuterium and hydrogen-like helium: experimental and nume rical studies END:VEVENT END:VCALENDAR