ausblenden:
Sprache(n):
eng - English
Datum:
2006
Publikationsstatus:
Angenommen
Seiten:
160
Ort, Verlag, Ausgabe:
Heidelberg : Ruprecht-Karls-Universität Heidelberg
Inhaltsverzeichnis:
1 Introduction
2 Two-Photon Excitation Dynamics
2.1 Introduction
2.2 Basic quantum dynamics
2.2.1 Analytic solution for constant intensity
2.2.2 Quantum dynamics including spontaneous decay
2.3 Generalizations of the equations of motion
2.3.1 Motion in a standing wave and time-dependent intensity 2.3.2 Further generalizations
2.4 Analytic solution including ionization and spontaneous decay
3 Transition Matrix Elements and Dynamic Polarizability
3.1 Introduction
3.2 Overview of the interactions of atom, laser mode and vacuum
3.2.1 Second-order perturbation
3.2.2 Fourth order perturbation
3.2.3 Transition matrix elements
3.3 Calculation of two-photon transition matrix elements
3.3.1 Calculational method
3.3.2 Results for two-photon transitions
3.4 Dynamic Stark e ect
3.4.1 Classical field approach
3.4.2 Second-quantized approach
3.5 Calculation of the AC Stark shift
3.5.1 Matrix elements
3.5.2 Results for two-photon transitions
3.6 Calculation of the photoionization cross section
3.7 Combined induced-spontaneous two-photon decay
3.8 Conclusion
4 Relativistic and Radiative Corrections to Dynamic Processes
4.1 Perturbation to the dynamic polarizability
4.2 Perturbation to the transition matrix element
4.3 Potential for relativistic corrections
4.4 Potential for radiative corrections
4.5 Calculation of relativistic and radiative corrections
4.5.1 Wavefunction contributions
4.5.2 Eigenenergy contributions
4.5.3 Hamiltonian contributions
4.5.4 Results for S S transitions
4.6 Beyond the dipole approximation
4.6.1 Field-configuration dependent corrections
4.6.2 Results for two-photon transitions
4.7 Lamb shift of laser dressed states
5 Monte Carlo Investigations and Lineshape
5.1 Introduction
5.2 Experimental setup
5.3 Implementation of the simulation
5.4 Photoionization broadening of the 1S 2S transition line shape
5.4.1 Introduction
5.4.2 Experimentally observed broadening and shift coe cients
5.4.3 Simulated broadening and shift coe cients
5.4.4 Comparison .
5.4.5 Laser line width
5.5 E ects of nozzle freezing
5.6 E ect of laser beam misalignment
5.6.1 The αθ-term
5.6.2 The α²-term
5.7 Conclusion
6 1S-2S Spectroscopy and Possible Drift of Fundamental Constants
6.1 Data analysis and systematic effects
6.1.1 MPQ data analysis procedure
6.1.2 Models for the velocity distribution
6.1.3 Full line shape model and Lorentz data analysis
6.1.4 Weighting and Χ²r in the data regression
6.1.5 Effect of unsteady power calibration
6.1.6 Freezing nozzle
6.1.7 Power-dependent line shape model
6.2 Test of the drift of fundamental constants
6.2.1 Introduction
6.2.2 Analysis of the laboratory measurements
6.2.3 Results
7 Conclusion 133 7.1 General conclusion
7.2 Proposals for future experiments
A Some comparisons with the literature
A.1 The 1S-2S transition
A.2 The 1S-3S transition
A.3 Light shifts
B Explicit Polarizabilities and Transition Matrix Elements Bibliography
Art der Begutachtung:
-
Identifikatoren:
eDoc: 284650
Art des Abschluß:
Doktorarbeit