Postdoc Extreme Ultraviolet Ptychography

Lensless imaging at multiple extreme ultraviolet wavelengths in parallel

Job description
The ability to perform high-resolution imaging with extreme ultraviolet (EUV) radiation provides exciting possibilities in science and technology. Especially for characterizing nanostructures with sub-20-nm feature size, EUV microscopy is a promising approach. While lens-based imaging is challenging at EUV wavelengths, lensless imaging methods based on coherent diffraction form a versatile and powerful solution.

In this project we use coherent EUV radiation from a high-harmonic generation (HHG) source, combined with coherent imaging techniques such as ptychography, to perform high-resolution imaging of nanostructures. We also pursue the use of ptychography as a multi-wavelength wavefront sensing method. One aspect of the project is to develop imaging methods that make use of new event-driven detectors.

As a postdoc, your research will be aimed at advancing ptychographic imaging through experiments with broadband HHG sources. You will join an active research team, working on HHG source technology, EUV ptychography concepts, detector systems, and imaging and wavefront sensing applications. Depending on your interests and expertise, your main research focus can be towards any (combination) of these aspects.

Job requirements

• Experience with ultrafast lasers and amplifiers, optics, high-harmonic generation, and ptychography or related computational imaging methods are expected. Experience with pulse compression, event-driven detectors and laser characterization methods are considered advantageous.
• Good communication skills (verbal and written) in English are required
• Excellent analytical skills and critical thinking are expected

TU Delft (Delft University of Technology)
Delft University of Technology is built on strong foundations. As creators of the world-famous Dutch waterworks and pioneers in biotech, TU Delft is a top international university combining science, engineering and design. It delivers world class results in education, research and innovation to address challenges in the areas of energy, climate, mobility, health and digital society. For generations, our engineers have proven to be entrepreneurial problem-solvers, both in business and in a social context.

At TU Delft we embrace diversity as one of our core values and we actively engage to be a university where you feel at home and can flourish. We value different perspectives and qualities. We believe this makes our work more innovative, the TU Delft community more vibrant and the world more just. Together, we imagine, invent and create solutions using technology to have a positive impact on a global scale. That is why we invite you to apply. Your application will receive fair consideration.

Challenge. Change. Impact!

Faculty Applied Sciences
With more than 1,100 employees, including 150 pioneering principal investigators, as well as a population of about 3,600 passionate students, the Faculty of Applied Sciences is an inspiring scientific ecosystem. Focusing on key enabling technologies, such as quantum- and nanotechnology, photonics, biotechnology, synthetic biology and materials for energy storage and conversion, our faculty aims to provide solutions to important problems of the 21st century. To that end, we educate innovative students in broad Bachelor's and specialist Master's programmes with a strong research component. Our scientists conduct ground-breaking fundamental and applied research in the fields of Life and Health Science & Technology, Nanoscience, Chemical Engineering, Radiation Science & Technology, and Engineering Physics. We are also training the next generation of high school teachers.

Click here to go to the website of the Faculty of Applied Sciences.

Conditions of employment

• Duration of contract is 2 years.
• A job of 36-40 hours per week.

Salary and benefits are in accordance with the Collective Labour Agreement for Dutch Universities. The TU Delft offers a customisable compensation package, discounts on health insurance, and a monthly work costs contribution. Flexible work schedules can be arranged.

Will you need to relocate to the Netherlands for this job? TU Delft is committed to make your move as smooth as possible! The HR unit, Coming to Delft Service, offers information on their website to help you prepare your relocation. In addition, Coming to Delft Service organises events to help you settle in the Netherlands, and expand your (social) network in Delft. A Dual Career Programme is available, to support your accompanying partner with their job search in the Netherlands. .

Additional information
If you would like more information about this vacancy or the selection procedure, please contact Prof. Stefan Witte, via S.M.Witte@tudelft.nl.

Application procedure
Are you interested in this vacancy? Please apply no later than 5 May 2025 via the application button and upload the following documents:

• CV
• Motivational letter

You can address your application to Prof. Stefan Witte.

Please note:

• You can apply online. We will not process applications sent by email and/or post.
• A pre-employment screening can be part of the selection procedure.
• For the final candidates, a knowledge security check will be part of the application procedure. For more information on this check, please consult Chapter 8 of the National Knowledge Security Guidelines. We carry out this check on the basis of legitimate interest.
• Please do not contact us for unsolicited services.

36 - 40 hours per week

Mekelweg 5