Measurements of local electric fields by Doppler-free laser spectroscopy of hydrogen resonance lines [Elektronische Ressource] / von Minja Gemišić Adamov

Measurements of local electric fields byDoppler-free laser spectroscopy of hydrogenresonance linesDISSERTATIONzur Erlangung des akademischen Gradesdoctor rerum naturalium(Dr. rer. nat.)im Fach Physikeingereicht an derMathematisch-Naturwissenschaftlichen Fakultät IHumboldt-Universität zu BerlinvonM.Sc.-Phys. (Univ. Belgrad, Jugoslawien) Minja Gemišić Adamovgeboren am 23.03.1974 in BorPräsident der Humboldt-Universität zu Berlin:Prof. Dr. Christoph MarkschiesDekan der Mathematisch-Naturwissenschaftlichen Fakultät I:Prof. Thomas Buckhout, Ph.D.Gutachter:1. Prof. Dr. Gerd Fußmann2. Priv.-Doz. Dr. Joachim Seidel3. Prof. Dr. Oliver Bensoneingereicht am: 19. Mai 2006Tag der mündlichen Prüfung: 15. August 2006iiAbstractA method for electric field measurements that observes the Stark spectra ofthe low excited levels n = 2 and n = 3 of atomic hydrogen has been exploredin this work. As advantage these levels can be excited Doppler-free fromthe ground state by a single laser and the highly resolved Stark spectra areeasy to understand and to be calculated. Good sensitivity of electric fieldmeasurements is achieved with specially designed solid state laser systems,which provide tuneable pulsed UV radiation with a high pulse peak-powerand a narrow bandwidth needed for Doppler-free two-photon excitation. Us-ing hydrogen and deuterium the Stark spectra of then = 2 level are detectedas optogalvanic signal.