Physics | Optics internship: fast modeling of electron optical systems

Internship Opportunity in ASML’s Scanning Electron Microscopy (SEM) Group

Within ASML, the Scanning Electron Microscopy (SEM) group focuses on fundamental understanding and novel solutions to advance our e-beam metrology tools used in the semiconductor industry. We are developing the next generation models to better predict the performance of our future tools. You, as an intern, can be part of the unique work we do.

Your Assignment

In this internship assignment, you will create a software framework to model electron optical components using fitted transfer matrices, compacted into a surrogate model. The goal is to make beam transport simulations much faster by using smart compression methods, without losing accuracy. The framework should also include a calibration tool that can build detailed transfer matrices and compact surrogate models for quick, real-time use. Some of the expected outcomes include:

• A modular software package for transfer matrix computation and surrogate model generation with compression
• Benchmarking showing accuracy compared to full simulations and significant speed improvements
• Documentation and examples for practical use

This is a Master internship for around 6 - 9 months, working minimum 4 days per week (hybrid). This topic is also suitable for a thesis. The start date of this internship is around February 2026.

Your Profile

To be a fit for this assignment, you:

• Are busy with your master's in Physics or Optics, preferably with a specialization in Electron Optics
• Preferably have a good understanding of electron optical systems or related domains
• Are skilled in Python
• Have some experience with numerical modeling and simulation
• Have good communication skills in English (verbal and written)

Other requirements you need to meet:

• You are enrolled at an educational institute for the entire duration of the internship
• You are located in the Netherlands to perform your internship. In case you are currently living/studying outside of the Netherlands, your CV/motivation letter includes the willingness to relocate
• If you are a non-EU citizen, studying in the Netherlands, your university is willing to sign the documents relevant for doing an internship (i.e., Nuffic agreement)

This position requires access to controlled technology, as defined in the United States Export Administration Regulations (15 C.F.R. § 730, et seq.). Qualified candidates must be legally authorized to access such controlled technology prior to beginning work. Business demands may require ASML to proceed with candidates who are immediately eligible to access controlled technology.