Postdoc position “Spectral filters for time-resolved and calibrated spectroscopy of EUV light sources”

Updated: 2 months ago
Deadline: 30 Sep 2023

  • Vacancies
  • Postdoc position “Spectral filters for time-resolved and calibrated spectroscopy of EUV light sources”

  • Key takeaways

    Are you enthusiastic about exploring scientific challenges with an industrial  application perspective?

    Extreme ultraviolet lithography (EUVL) is the latest generation of the semiconductor manufacturing technology powered by laser-produced-plasma light sources. These EUV light sources emit in a broad range of wavelengths spanning from soft x-rays to visible. A quantitative spectral characterization capability of such a broad wavelength range recently become available using a proprietary transmission grating spectrometer developed by XUV optics group (https://doi.org/10.1063/5.0073839). The calibration of the charge-coupled-device (CCD) that are used as detectors in such a spectrometer is sensitive to the operation conditions of the light source. Cross-calibration of the CCD with other type of detectors such as photodiodes and investigating the light sources with time resolution provides wealth of information that is otherwise not accessible.

    We are looking for a motivated and skilled post-doctoral researcher to carry out research on the fundamental physics questions on the calibration sensitivity and time-dependent spectral evolution of the EUV light source. Methods to enable inline calibration and time-resolved operation is to be developed in the project with the support of technical staff. Specifically, aim is to design multilayer spectral filters based on Bragg’s condition and deposition these designs using magnetron sputtering to enable cross-calibration of the CCD response and the photodiode response.

    The XUV Optics Group at Twente has started a new multidisciplinary research program on these topics. We develop forefront fundamental research, relevant to high tech applications (www.utwente.nl/xuv/). The research will take place in a state-of-the-art thin film laboratory within the MESA+ Institute for Nanotechnology at the University of Twente, in collaboration with various academic and industrial partners. The XUV group has a track record in developing thin film physics and holds several records in functional film properties, including the reflectivity of thin film multilayer optics.

    Challenge

    Your goal is to develop the fundamental physics understanding on time-resolved and calibrated spectroscopy of EUV light sources. This includes:

    • Understanding the sensitivity of detector calibration to the operation conditions of the EUV light source,
    • Designing and developing multilayer spectral filters/coatings to enable online calibration at various wavelengths,
    • Analyzing the properties of the developed filters/coatings using characterization techniques such as AFM, XRD, XRR and SEM,
    • Understanding the time-dependent evolution of the spectral emission of the EUV light sources.

    Information and application

    Your reaction should include:

    • an application/motivation letter, emphasizing your specific interest and motivation for this particular position,
    • a detailed CV, containing your publications list, contact details of referees, and an academic transcript of  M.Sc. education and doctorate

    An interview and a scientific presentation will be part of the selection procedure. For detailed information, you can contact Dr. Muharrem Bayraktar at m.bayraktar@utwente.nl, +31 53 489 3910. Please apply via the “Apply Now” button below.


    About the department

    The University of Twente stands for life sciences and technology. High tech and human touch. Education and research that matter. New technology which leads change, innovation and progress in society. The University of Twente is the only campus university in the Netherlands. We have a strong focus on personal development and give scope for carrying out pioneering research. The Faculty of Science & Technology works together intensively with industrial partners and researchers in the Netherlands and abroad and conducts extensive research for external commissioning parties and funders.

    The XUV Optics group is embedded in the MESA+ Institute (www.mesaplus.utwente.nl), which is one of the largest nanotechnology research institutes in the world, delivering competitive and successful high-quality research. The institute employs 500 people of which 275 are PhD’s or PostDocs. With its unique NanoLab facilities the institute holds 1250 m2 of cleanroom space and state-of-the-art research equipment.

    The University of Twente is an equal opportunity employer which values diversity. We do not discriminate on race, religion, color, national origin, gender, sexual orientation, age, marital status, or disability status. Because of our diversity values we do particularly support women to apply.


    About the organisation

    The Faculty of Science & Technology (Technische Natuurwetenschappen, TNW) engages some 700 staff members and 2000 students in education and research on the cutting edge of chemical technology, applied physics and biomedical technology. Our fields of application include sustainable energy, process technology and materials science, nanotechnology and technical medicine. As part of a people-first tech university that aims to shape society, individuals and connections, our faculty works together intensively with industrial partners and researchers in the Netherlands and abroad, and conducts extensive research for external commissioning parties and funders. Our research has a high profile both in the Netherlands and internationally and is strengthened by the many young researchers working on innovative projects with as doctoral candidates and post-docs. It has been accommodated in three multidisciplinary UT research institutes: Mesa+ Institute, TechMed Centre and Digital Society Institute.


    View or Apply

    Similar Positions