MA: In-situ analysis of UKP laser structuring in sapphire

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, offers the opportunity to write a master's thesis on the topic:
In-situ analysis of UKP laser structuring in sapphire.

Modern laser processes such as Selective Laser-induced Etching (SLE) are used to manufacture high-precision glass components for the semiconductor industry, medical technology, and quantum technology with detailed dimensions of < 1 µm. The strong focusing of ultrashort pulsed laser radiation achieves extremely high light intensities of 10^12 W/cm^2, which trigger nonlinear absorption mechanisms and thus enable the processing of transparent materials.

Crystalline materials such as sapphire are particularly attractive for many applications due to their hardness and high thermal conductivity. However, the underlying absorption mechanisms of laser radiation in sapphire are still poorly understood. In a first step, a pump-probe system will be used to investigate the absorption mechanisms, the propagation of shock waves, and the formation of stresses and cracks in the femtosecond range.

• You will acquire comprehensive knowledge of processing transparent materials with UKP laser radiation.
• You will also plan and carry out experiments on the SLE laser processing system.
• You will perform time- and location-resolved measurements using the pump-probe system.
• You will analyze and evaluate the results obtained.
• You will prepare the results for further use.

• You are studying physics or a similar subject and are interested in current topics.
• You are motivated and committed when it comes to familiarizing yourself with new challenges.
• You work independently and conscientiously.
• You enjoy teamwork and actively contribute to a committed environment.

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.
➕ Advantages: Opportunity to benefit from exciting corporate benefits.
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.

Christian Peters M.Sc.
Telephone: +49 0241/

Fraunhofer Institute for Laser Technology ILT

Requisition Number: 82728 Final date to receive applications: 05/31/2025