Experiments

1. Nuclear Magnetic Resonance (NMR) in liquids
2. Optical Pumping
3. Doppler-free Rb saturation spectroscopy
4. Electro- and Photoluminescence


5. Rotation-Vibration Spectra of Molecules
6. Lattice Vibrations and Effects of Free Charge Carriers in Solids
7. Raman-Spectroscopy on Solids


8. Zeeman Effect
9. High-Resolution Gamma-Spectroscopy with Ge-Semiconductor Detector
10. Alpha-Particle Spectroscopy with a Semiconductor Detector


11. X-Ray diffraction (XRD)
12. Mass Spectroscopy on Gases and simple Organic Molecules
13. Hall-Effect and Electrical Conductivity


14. Optical Spectroscopy at Colour Centers and Molecules
15. Franck-Hertz Experiment
16. Squid Experiment


17. Electron-Paramagnetic Resonance (EPR)
18. Study of Solid State Surfaces using a Scanning Tunnelling Microscope
19. Study of Solid State Surfaces using a Atomic Force Microscope

Doppler-free Rb saturation spectroscopy with an external cavity diode laser

Supervisor: Dr. Christian Chmelik



In this experiment, an external cavity diode laser is used to perform laser spectroscopy of rubidium atoms. With the experimental set-up available, the Doppler broadened optical absorption lines (linear spectroscopy) are measured first. Thereafter, one applies the technique of saturated absorption spectroscopy to study the lines with resolution beyond the Doppler limit (nonlinear spectroscopy). This enables to measure the hyperfine splittings of one of the excited states of rubidium. A Fabry-Perot interferometer will be used to calibrate the frequency scale for the measurements.

• Operation of External Cavity Diode Laser
• Operation of Fabry-Perot-Interferometer
• Difference between linear and non-linear spectroscopy
• Measurement and analysis of the Doppler-broadened
780 nm rubidium spectral line

• Measurement and analysis of the Doppler-free adsorption line
• Verifying the energy levels
• Calculation of the Doppler broadening
• Calculation of the hyperfine coupling constants


description of this experiment