30.06.2026, Academic staff
Join the Geodetic Observatory Wettzell at the Technical University of Munich and contribute to the operation and further development of the world-leading G ring laser. This PhD project combines laser optics, precision metrology, electronics, and advanced data analysis in close collaboration with the University of Bonn and an international DFG-funded research unit.
At the Technical University of Munich, within the Geodetic Observatory Wettzell, we operate the 4 × 4 m G ring laser — currently the only instrument of its kind providing data suitable for geodetic applications.
This PhD project focuses on the operation and further development of an optical frequency comb, as well as on the implementation of electronics for optical readout systems. The work includes system operation, continued development, and performance optimization.
The successful candidate will collaborate closely with the quantum metrology group at the University of Bonn and the geodetic analysis team, contributing to data generation, processing, and delivery. The project will address key challenges such as advanced backscatter mitigation, improved scale factor estimation, and advanced post-processing. A background in physics or engineering, ideally with some experience in laser optics, digital signal processing, and electronics, is an advantage. More about the Ring project can be found: www.ringlaser.de
Master’s degree in physics, laser physics, electrical engineering, aerospace engineering, or a related field
Programming skills in MATLAB and/or Python (knowledge of C++ is an advantage)
Solid background in optics and laser physics
Knowledge of digital signal processing
Interest in building and operating complex experimental systems and prototypes
Experience with electronics, including PCB design, soldering, and characterization of electronic components, is an advantage
Experience with frequency combs or precision metrology is a plus
Ability to work independently as well as part of an interdisciplinary team
Strong problem-solving skills and a structured working style
Good command of written and spoken English, knowledge of German is advantageous but not required.
Operation and improvement of an optical frequency comb for precision metrology applications
Design and implementation of electronic systems for optical readout
Optimization of system performance, including stability and sensitivity improvements
Investigation and mitigation of systematic effects, particularly backscatter
Development and implementation of advanced data processing and analysis methods
Contribution to scale factor determination and calibration strategies
Collaboration with project partners at the University of Bonn and within the geodetic analysis team
Documentation of results, preparation of scientific publications, and presentation at conferences
Work with high-end instrumentation, including the G ring laser and optical frequency comb systems
A research position designed to support doctoral studies and foster scientific and personal development
Working in an international and interdisciplinary research unit involving multiple institutions and 14 doctoral researchers
Flexible working hours and the possibility of working partially from home
We offer a 75% position classified according to TV‑L E13, initially limited to four years, within the DFG-funded project described above
The primary workplace will be the Geodetic Observatory Wettzell, with regular interaction with TUM and project partners
A continuation into a post-doctoral position may be possible
The position is generally suitable for candidates with disabilities. Disabled applicants will be given preference in case of generally equivalent suitability, aptitude, and professional performance.
The Technical University of Munich (TUM) is committed to promoting diversity and equal opportunities. We strongly encourage applications from women and from individuals with diverse backgrounds and perspectives, as they enrich our research and working environment.
TUM supports the compatibility of family and career through various institutional measures.
For further information regarding the position, please contact [email protected].
Then send your application documents (cover letter, curriculum vitae, diplomas, possibly job references) in PDF format (max. 10 MB) by e-mail by 13 September 2026, with the subject: “Application: G-Ring Ph.D. position” to [email protected].
The position is suitable for disabled persons. Disabled applicants will be given preference in case of generally equivalent suitability, aptitude and professional performance.
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Kontakt: [email protected]
Job details are sourced from the employer's original posting.
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The Technical University of Munich is a public research university for engineering, natural sciences, life sciences, medicine, and economics.