Ramsey-comb spectros copy on molecular deuterium and hydrogen-like helium: experimental an d numerical studies
There exist several physical phenomena that cannot currently be accounted for by physics theories. Therefor e, spectroscopists search for ever finer details in atomic and molecu lar spectra hoping to find clues to these phenomena. The work describ ed in this thesis contributes to this research effort. We present exp erimental results on spectroscopy of the deep ultraviolet 202 nm X - EF transition in molecular deuterium, measured with an uncertainty of 19 kHz with the Ramsey-comb spectroscopy technique. We also present experimental results for the first laser excitation of the 1S-2S tran sition in He+ at 32 nm and present an in-depth feasibility study of R amsey-comb spectroscopy of the 1S-2S transition on trapped and laser- cooled He+, featuring extensive numerical results mapping out the par ameter space in which a precision measurement is expected to be possi ble. Additionally, we present a Graphics Processing Unit-accelerated routine to simulate the propagation of intense ultrashort pulses thro ugh an atomic gas which achieves significant (up to almost 200) speed -up factors relative to a naive Central Processing Unit implementatio n of the same routine.
More information on the thesis DESCRIPTION: Ramsey-comb spectroscopy on molecular deuterium and hydro gen-like helium: experimental and numerical studies There exist sever al physical phenomena that cannot currently be accounted for by physi cs theories. Therefore, spectroscopists search for ever finer details in atomic and molecular spectra hoping to find clues to these phenom ena. The work described in this thesis contributes to this research e ffort. We present experimental results on spectroscopy of the deep ul traviolet 202 nm X - EF transition in molecular deuterium, measured w ith an uncertainty of 19 kHz with the Ramsey-comb spectroscopy techni que. We also present experimental results for the first laser excitat ion of the 1S-2S transition in He+ at 32 nm and present an in-depth f easibility study of Ramsey-comb spectroscopy of the 1S-2S transition on trapped and laser-cooled He+, featuring extensive numerical result s mapping out the parameter space in which a precision measurement is expected to be possible. Additionally, we present a Graphics Process ing Unit-accelerated routine to simulate the propagation of intense u ltrashort pulses through an atomic gas which achieves significant (up to almost 200) speed-up factors relative to a naive Central Processi ng Unit implementation of the same routine.More information on the thesis END:VEVENT END:VCALENDAR