Scientific Internship: Optical generation of 1 THz bandwidth acoustic wavepackets for the detection of buried nano-structures

Date posted March 18, 2019
Type Scientific internships

At the Advanced Research Center for Nanolithography (ARCNL) we carry out exciting fundamental physics at the highest possible level with relevance to key technologies in nanolithography. We contribute to the production of ever smarter and smaller electronics, while at the same time pushing the boundaries of our fundamental insight into the workings of nature.

In the EUV targets group we work on the generation and detection of ultrahigh-frequency  (10-500 GHz) sound waves in metals and other materials. These sound waves can be used to "see" through layers that are  otherwise opaque to visible light. The extremely short wavelengths of the acoustics waves, smaller than the wavelength of visible light, ensures that they can be used to detect buried structures as small as 75 nm.  In this MSc project, you will push the frequency bandwidth of these acoustic pulses to 1 terahertz (THz) and beyond. This can be done by choosing a proper material and the right material thickness. For this project you will learn to build and operate a femtosecond high-power pump-probe laser setup  to optically generate and detect these extremely high frequency pulses. You will also learn to occasionally work in a cleanroom to fabricate thin layers using advanced deposition techniques and to use state of the art inspection techniques such as SEM, XPS, and AFM to characterize them.

About the group

The research activities of the EUV Targets group currently focuses on laser induced damage and on laser-induced extremely-high frequency ultrasound for the detection of nanostructures below opaque layers. The group uses state-of-the-art high-power femtosecond laser systems to achieve this.

You will work in the EUV Targets group team at ARCNL but you’ll also have the opportunity to visit and interact with scientists and engineers working at ASML, the world leading manufacturer of high tech lithography machines for chip making.

Qualifications

You have a Bachelor’s degree in physics or a related field and participate in a Master study. The internship must be a mandatory part of your curriculum. You have a nationality of an EU-member state and/or you are a student at a Netherlands University. You must be available for at least 6 months.

Terms of employment

At the start of the traineeship your trainee plan will be set out, in consultation with your ARCNL supervisor, including a small allowance.

Contact info

Prof. P. C. M. Planken
Group leader EUV targets
E-mail: planken@arcnl.nl
Phone: +31(0)20 851 7100

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–  Resume;
–  List of followed courses plus grades.

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