Optimization of a 2D magneto-optical trap as a source for cold Lithium
- Task: We use a 2D magneto-optical trap (MOT) as source for cold Lithium. Therefore, we need to maximise the number of cold Lithium atoms in the MOT. By variation in detunings and the intensity of the different MOT-Beams the atom density can be optimized.
- Field of study: lasers, optics, electronics, vacuum system
- Contact: Gregor Schwendler (grschwen[a]uni-mainz.de)
Laser intensity stabilization for Lithium spectroscopy
- Task: For the spectroscopy of a cold Lithium beam emitted by a 2D MOT we need a low intensity laser beam, which needs to be stable in frequency and intensity.
- Field of study: lasers, optics, electronics, acousto-optics
- Contact: Gregor Schwendler (grschwen[a]uni-mainz.de)
Gated counting measurement using an FPGA
- Task: For the spectroscopy of a cold Lithium beam we need a Photon counter, which can be externally triggered. For this purpose we would like to use an FPGA.
- Field of study: FPGA, programming ,electronics.
- Contact: Gregor Schwendler (grschwen[a]uni-mainz.de)
Setup of a beat-offset-lock scheme to stabilize a laser to a reference
- Task: Build an external cavity diode laser (ECDL) and stabilize it to another laser by using a beat-offset-locking scheme.
- Field of study: lasers, optics, electronics
- Contact: Marcel Willig (marcel.willig[a]uni-mainz.de) or Gregor Schwendler (grschwen[a]uni-mainz.de)
Building an automatic steering system for laser beams
- Task: Build and program a steering system to automatically couple a laser beam into an optical fiber with maximum efficiency.
- Field of study: lasers, optics, electronics, programming
- Contact: Marcel Willig (marcel.willig[a]uni-mainz.de) or Gregor Schwendler (grschwen[a]uni-mainz.de)
Laser intensity stabilization (lithium spectroscopy and/or optical reference cavity)
- Task: Build a ready-to-use electro-optical system to compensate and stabilize intensity changes – to be embedded in an existing frequency stabilization setup and/or a lithium 2D MOT spectroscopy setup.
- Field of study: lasers, signal processing, control systems, electronics
- Contact: Hendrik Schürg (h.schuerg[a]uni-mainz.de) or Gregor Schwendler (grschwen[a]uni-mainz.de)
High-efficiency hydrogen dissociator
- Task: Systematic study and optimization of control parameters and stability of hydrogen dissociation in a microwave discharge tube.
- Field of study: vacuum technology, radiofrequency electronics, plasma physics, detector physics
- Contact: Merten Heppener (meheppen[a]uni-mainz.de) or Hendrik Schürg (h.schuerg[a]uni-mainz.de)
Differential pumping setup for laser mirrors in vacuum
- Task: At 243 nm, mirror coatings degrade under incident light in vacuum environments. To prevent this, oxygen is flushed over the mirrors at around 10 mbar. This (higher) pressure region has to be separated from the low pressure spectroscopy chamber while still allowing the laser to traverse. For this, a differential pumping system has to be designed and built.
- Fields of study: vacuum techniques, mirror coatings
- Contact: Merten Heppener (meheppen[a]uni-mainz.de)
Isolation of an optical reference cavity system
- Task: Based on characterization of the current (unshielded) optical reference system for laser frequency stabilization, design and construct a portable temperature-stabilized isolation box.
- Field of study: laser frequency stabilization, mechanical engineering, simulation
- Contact: Hendrik Schürg (h.schuerg[a]uni-mainz.de)
Helical resonator hydrogen discharge
- Task: Design, building and testing of a high-stability radiofrequency helical resonator to generate a hydrogen discharge.
- Field of study: radiofrequency electronics, plasma physics
- Contact: Hendrik Schürg (h.schuerg[a]uni-mainz.de)