Johannes Drozella

Developing optical simulation, metrology algorithms, and useable toolboxes for research and product development | Special interest in wave optics+ | EUV Systems Metrology | Dr.-Ing.

Aalen, Baden-Württemberg, Germany

About

Optical scientist and engineer, combining theory, programming, and application. Developed an efficient wave-optical simulation toolbox, which was successfully applied for multiple research projects and publications in the field of microoptics. Design and process optimization for additive manufacturing using two-photon polymerization. Dr.-Ing. (“Wave optical simulation framework for 3D-printed micro-optical systems and volume scattering devices”, Prof. A. Herkommer & Prof. H. Gross) Currently working on metrology algorithms, simulation, and data evaluation primarily for EUV semiconductor manufacturing optics.

Experience

  • R&D Scientist in EUV System Metrology and Optical Simulation at ZEISS Semiconductor Manufacturing Technology
    Oct 2024 - Present · 1 yr 9 mos

    Optical System Metrology Simulation and Evaluation for EUV optics in the field of semiconductor manufacturing. Programming of Simulation Toolboxes, Signal and Measurement Accuracy estimation, Error Effect Analysis.

  • Research And Development Scientist for System Metrology Applications at Kirsch GmbH Personalmanagement
    Sep 2023 - Sep 2024 · 1 yr 1 mo

    At ZEISS Semiconductor Manufacturing Technology (SMT). Electromagnetic simulation, algorithms and optimization for cutting edge optical systems. Development, implementation, application of optical simulation techniques for tasks in system metrology.

  • Institut für Technische Optik (ITO), Universität Stuttgart (Full-time · 6 yrs 2 mos)
    • Acting Research Group Leader
      Nov 2022 - Sep 2023 · 11 mos

      Participation in shaping the institute’s direction. Planning and realization of public events (‘day of sciences’, talks, presentations for external visitors, etc.). International cooperation and exchange. Negotiation and fulfilment of industrial contracts. Assisting in personnel matters and providing intensified mentoring.

    • Research Scientist / PhD Candidate
      Aug 2017 - Sep 2023 · 6 yrs 2 mos

      Development and implementation of a wave-optical simulation tool as part of an open-source measurement, control, and processing software in C++ (ITOM: itom.rocks). Due to its high speed and user-friendliness (easy model creation, optional processing of Matlab or Python prepared data), it is possible to incorporate wave-optical simulations into the rapid design process of additively manufactured micro-optical systems. Other research groups and institutes have also successfully used this software, resulting in multiple research findings and publications. Methods for incorporating measurement data into the simulations enable direct design and production improvements through more realistic simulations. Design of novel optical devices using own algorithms and proprietary software like Zemax, Quadoa, and others - subsequent appropriate process design, manufacturing, characterization, and verification. Work in laboratories and cleanrooms, particularly with a photolithography device for two-photon polymerization, enabling direct 3D writing of structures ranging from a few μm to single mm. This work, conducted in collaboration with the 4th Physics Institute (Prof. H. Giessen), has pioneered the field of additively manufactured micro-optics. In several successful research projects and industrial collaborations, funding has been secured for multiple full-time positions, as well as commercial and experimental high-quality measurement and production devices, establishing a foundation for further advancements in various areas of 3D-printed micro-optics and their characterization. Presentations at national and international conferences, publications in scientific journals. Supervision of student projects, laboratory tasks, and guidance of new colleagues. Dr.-Ing. (PhD Engineering) in optical simulation and additive manufacturing of complex micro-optical systems.

  • Intern and industry Bachelor's thesis - Apt. Construction and Design at ZF Friedrichshafen AG
    Oct 2013 - May 2014 · 8 mos

    Mechanical design, stress analysis, design and technical drawings for production CAD design and detailing of differential and portal drive suspensions; modeling of cast iron and steel parts. Stress analysis using FEM simulations. Management of project and parts data, creation of technical drawings for production. Bachelor Thesis: Development of an overland-bus rear-axle suspension for the requirements of the North American market.