PhD Position: Applied Infrared Spectroscopy with Ultrabroadband Sources

Are you an enthusiastic young scientist who likes to work with and/or develop new spectroscopic instruments? And do you hold a Master's degree in physics (photonics), electrical engineering or a related field? Would you like to be involved in the research and development of instruments based on the latest ultrabroadband mid-infrared intrapulse difference frequency generation source to perform multispecies detection in demanding applications as in environmental and exposure monitoring, and the green hydrogen industry? If so, then you have a part to play as a PhD candidate in our research team.

Put your ideas to the test at our green campus and push your boundaries in an internationally friendly environment. Gas sensing plays an important role in many fields. It is used to monitor climate change, optimise industrial control, as well as observe important chemical or biological reactions related to life sciences. Among several optical methods for measuring gas concentrations, absorption spectroscopy with broadband, laser-based infrared sources is emerging as a promising and effective tool. In particular, the newly developed high-power intrapulse difference frequency generation (IDFG) based sources extend deep into the mid-infrared wavelength range with unprecedented spectral coverage (2–11.5 µm).

In our lab, we have recently demonstrated a system comprising an in-house built Fourier transform spectrometer (FTS) with such a source for multispecies trace gas detection. This system has shown an excellent performance during in-situ measurements of a wide range of molecular species with high sensitivity (Opt. Express 32, 14506: 2024).

Here, coherent open-path spectroscopy (COPS) will be used for field measurements. In contrast to conventional absorption spectroscopy, COPS eliminates the use of a gas cell and guides the light beam over an outdoor path for direct interaction with the area of interest.

This PhD project aims to further explore the potential of developing a robust system using COPS and deploying it in the field for gas measurements in real-life applications, for example environmental monitoring of greenhouse gases and air pollutants (i.e. CH4, CO2, N2O, NH3, SO2, CO, etc.) and plasma-based conversion of industrial waste gases. Together with our team, you will develop a field-deployable spectrometer, perform field measurements, and analyse and interpret the data. We are looking for a PhD candidate who is eager to conduct this applied research.

Would you like to learn more about what it is like to pursue a PhD at Radboud University? Visit the page about working as a PhD candidate.

• We will give you a temporary employment contract (1.0 FTE) of 1.5 years, after which your performance will be evaluated. If the evaluation is positive, your contract will be extended by 2.5 years (4-year contract).
• You will receive a starting salary of €2,901 gross per month based on a 38-hour working week, which will increase to €3,707 in the fourth year (salary scale P).
• You will receive an 8% holiday allowance and an 8,3% end-of-year bonus.
• We offer Dual Career Coaching. The Dual Career Coaching assists your partner via support, tools, and resources to improve their chances of independently finding employment in the Netherlands.
• You will receive extra days off. With full-time employment, you can choose between 30 or 41 days of annual leave instead of the statutory 20.

Work and science require good employment practices. This is reflected in Radboud University's primary and secondary employment conditions. You can make arrangements for the best possible work-life balance with flexible working hours, various leave arrangements and working from home. You are also able to compose part of your employment conditions yourself, for example, exchange income for extra leave days and receive a reimbursement for your sports subscription. And of course, we offer a good pension plan. You are given plenty of room and responsibility to develop your talents and realise your ambitions. Therefore, we provide various training and development schemes.

Our research team is a diverse team of international enthusiast scientists interested in gas detection for different applications. Research in the Trace Detection Laboratory focuses on the detection of species in trace levels with a high emphasis on the gas phase. For this, we develop new laser-based spectroscopic instruments and use a strong analytical infrastructure of various mass spectrometry-based techniques. These applications cover a wide range of areas such as pollution monitoring, bio-medical applications, the agri-food industry, and emission/exposure measurements.

We have a large list of national and international collaborating groups, universities, institutes and companies in several national and European projects. This provides us with a very active and open environment, and exposes us to new challenges in trace detection for which we can provide solutions.

The TDLab is embedded within the Institute for Molecules and Materials (IMM), at the Faculty of Science of Radboud University (Nijmegen, Netherlands). IMM is a dynamic interdisciplinary research institute that brings together chemistry and physics to unravel the mysteries of atomic, molecular and solid-state environments. The institute strives to make a positive impact on society by exploring practical applications and educating the future leaders in science and innovation.

You can apply only via the button below. Address your letter of application to Simona Cristescu. In the application form, you will find which documents you need to include with your application.

Applications will be reviewed, and interviews scheduled during the recruitment period. Therefore, you will receive feedback and information about a possible follow-up process shortly. If a suitable candidate is found before the closing date, the vacancy will be closed, and further applications will no longer be possible. Feel free to contact the listed contact person for the latest status.

You will preferably start your employment on 1 September 2025.

We can imagine you're curious about our application procedure. It describes what you can expect during the application procedure and how we handle your personal data and internal and external candidates.