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We regularly have openings for Interns, PhD students, and Postdocs!

Junior researcher in multispecies open-path molecular absorption spectroscopy

Are you an enthusiastic recent Master’s graduate of Physics and Astronomy, Molecular Sciences, or related fields? Are you keen on developing or working with novel scientific instruments but you are not sure if you would like to stay in academia and pursue a PhD? Then we have a proposition for you! Join us as a junior researcher for a year (paid position), learn how things work in laser spectroscopy, and gain hands-on experience as well as better clarity for your future!

Who we are?

We are Life Science Trace Detection Laboratory (TDLab) part of Institute for Molecules and Materials (IMM) at Faculty of Science, Radboud University.

What we do?

Research in the TDLab focuses on the detection of species in the gas phase in complex mixtures at trace levels. For this, we use various laboratory instruments such as high-resolution mass spectrometry, and we also develop new laser-based spectroscopic instruments (e.g. using Fourier transform spectroscopy) for specific applications.  These applications include agri-food industry, air pollution monitoring, bio-medical and disease detection, emission/exposure measurement, and much more.

What is the project about?

In this project, we develop a transportable laser-based sensor for detection of trace gas species in an open-path configuration. The sensing principle is based on molecular absorption and the technology is based on supercontinuum laser sources and Fourier transform spectroscopy (FTS). In the open-path configuration, the laser beam is sent out from the source over a free distance (outside of the lab) and is reflected back towards the spectrometer, where the absorption spectrum is recorded. Different gas species absorb light at different wavelengths, thus by analyzing the spectrum we can determine the gases and their concentrations.

What is this position about?

You will join a team of researchers working on a transportable open-path spectrometer and learn about the system. You will align the optics inside the system and the open-path beam, while you get familiar with the FTS, as well as analysis of the absorption spectrum. Afterwards, you will perform measurements in the field for open-path monitoring of pollutants/greenhouse gases, and analyzing the data. The data analysis will include proper modeling to achieve emission rates from retrieved concentrations. Therefore, you can expect to gain a lot of new experiences in different disciplines.

What expertise is needed?

Prior basic knowledge of laser physics, absorption spectroscopy, and MATLAB is strongly recommended.


Dr. Simona M. Cristescu: simona.cristescu@ru.nl


Within our group, we are always looking for interested students that want to do an internship with us. Have a look at our research pages to get an idea of the projects you can work on during an internship. We accept students from numerous backgrounds, ranging from physics to chemistry, or (medical) biology. For more information, you can contact dr. Simona Cristescu (group leader).

For an overview of the projects which we can currently offer an internship position on, please have a look here.