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)
Polarisation Switching unit Lithium Spectroscopy
Task: For the spectroscopy of a cold Lithium beam emitted by a 2D MOT, we need to be able to quickly switch the Polarisation of our spectroscopy beam.
Field of study: lasers, optics, electronics, acousto-optics
Contact: Gregor Schwendler (grschwen[a]uni-mainz.de) and Hannah Jost (hjost@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: 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: Gregor Schwendler (grschwen[a]uni-mainz.de)
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)
Data Acquisition/Slow control System
Task: Find or implement a suitable data acquisition system for interfacing to various sensors and automatically obtaining measurement data.
Field of study: programming, device interfaces, server architecture
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
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)
Determination of the dissociation degree in a hydrogen plasma
Task: Determination of the dissociation fraction of hydrogen in a radiofrequency discharge via optical emission spectroscopy of the (atomic hydrogen) Balmer-lines and the (molecular) Fulcher bands.
Field of study: optical emission spectroscopy, atomic/molecular physics
Contact: Hendrik Schürg (h.schuerg[a]uni-mainz.de)
Hydrogen Discharge @ T-Rex
If you have an own idea for a project in mind that you would like to do in our group, please feel free to contact us!
