Thesis: 3D Glass Processing Using Selective Laser-induced Etching (SLE)

In cooperation with the Chair of Laser Technology (LLT), the Fraunhofer Institute for Laser Technology (ILT)—Europe’s leading center for contract research and development in the field of laser technology—is offering the opportunity to write a thesis on the topic: »Formation and Effects of Stress in N-BK7 During 3D Glass Processing Using Selective Laser-induced Etching (SLE)«.

The In-Volume Structuring & Lithography Group focuses on processing a wide range of materials, including metals and glasses, using ultrashort-pulsed (USP) laser radiation with pulse durations in the picosecond range. Advanced laser processes such as selective laser-induced etching (SLE) are used to manufacture highly precise glass components with feature sizes below 1 µm for applications in the semiconductor industry, medical technology, optics, and quantum technology. Current challenges include expanding the range of processable materials, such as borosilicate glasses, and investigating the fundamental interaction mechanisms underlying the SLE process in these materials.

Be part of change

• The goal is to investigate and understand the effect of different laser parameters on the surface quality of 2D and 3D structures in N-BK7 borosilicate glass

• To this end, you will examine and analyze the established process windows under varying process parameters

• You will then characterize the surface quality using our laser scanning microscope and white-light interferometer

• In addition, you will investigate the deposited energy and process-induced stresses using integrating sphere and polarisation-contrast microscopy

• Depending on your field of study and prior knowledge, the results may also be compared with theoretical simulations

What you contribute

• You are studying physics, materials science, or a related field

• You are interested in lasers, working at the smallest scales, and the fabrication of 3D components, and you want to understand and improve existing processes

• Prior knowledge of laser technology is beneficial but not required

What we offer

• Team spirit: Creative, interdisciplinary environment with a motivated team, flat hierarchies, and an informal culture.

• Workplace: Excellent range of machines and equipment, as well as first-class office facilities.

• Involvement: Practice-oriented thesis in an innovative applied research environment.

• Work-life balance: Benefit from flexible working hours based on trust.

• Getting there: Good transport connections, parking spaces directly in front of the institute, an e-charging station, and a parking garage.

The position is limited in duration until completion of the thesis. We value and promote the diversity of our employees' skills and therefore welcome all applications – regardless of age, gender, nationality, ethnic and social origin, religion, ideology, disability, sexual orientation and identity. Severely disabled persons are given preference in the event of equal suitability. Our tasks are diverse and adaptable – for applicants with disabilities, we work together to find solutions that best promote their abilities.

With its focus on developing key technologies that are vital for the future and enabling the commercial utilization of this work by business and industry, Fraunhofer plays a central role in the innovation process. As a pioneer and catalyst for groundbreaking developments and scientific excellence, Fraunhofer helps shape society now and in the future.

Ready for a change? Then apply now and make a difference! Once we have received your online application, you will receive an automatic confirmation of receipt. We will then get back to you as soon as possible and let you know what happens next.

If you have any questions about this position, please contact:

Sandra Borzek, M. Sc. Phone: +49 241 8906-459

Fraunhofer Institute for Laser Technology ILT

www.ilt.fraunhofer.de

Requisition Number: 85621 Application Deadline: 10/31/2026