• Laser Development Department

    The Laser Development Department concentrates on the development of laser sources for a variety of applications.

  • Production and systems

    The core competencies of the department are laser-based solutions for industrial fields

  • Nanotechnology

    The main work of the department is in the development of new technologies for the generation of micro- and nano-structured objects ...

  • Laser Components

    The roots of the Laser Component Department go back to the beginning of the 70s

  • Biomedical Optics

    The Biomedical Optics Department combines the use of lasers for imaging, laser surgery, and cell and tissue manipulation.

  • Materials and Processes

    The interaction between the laser beam with mainly metal materials from basic research to industrial contract research

Welcome to the LZH


As an independent non-profit research institute for photonics and laser technology the Laser Zentrum Hannover e.V. (LZH) stands for innovative research, development and consulting. The focus of our applied research in the field of photonic technologies is on:

  • Optical components and systems
  • Optical production technologies
  • Biomedical photonics

Interdisciplinarity is thereby strongly emphasized since the foundation 1986 and is the basis of the excellent work at the LZH. As a reliable partner of the industry, we constantly focus on the customer benefit und use light for innovation.

First overview of laser-induced damage

The newly published book „Laser-Induced Damage in Optical Materials“ gives a comprehensive overview of laser-induced damage effects in optical components. The book, edited by Prof. Dr. Detlev Ristau, Head of the Laser Components Department at the Laser Zentrum Hannover e.V. (LZH), is a collection of contributions by leading scientists in the field optical components and laser technology.

Underwater laser cutting

Underwater construction on offshore wind farms, bridges or locks must presently be done by scuba divers. For maintenance and repair of metal constructions, a number of processes are available, but these are time consuming and difficult on the divers. For this reason, engineers at the Laser Zentrum Hannover e.V. (LZH) and the Leibniz Universität Hannover (LUH) are developing a process for automated, underwater laser cutting.

Reliable joining of high-strength steels using a laser hybrid welding process

Laser-gas metal arc (GMA) hybrid welding is fast, good for deep welding, and can be used to bridge large gaps. However, for thicker high-strength, fine-grain structural steels, hot cracks and undesired hardness levels can occur in the welding seam. For this reason, in an interdisciplinary project scientists at the Laser Zentrum Hannover e.V. (LZH) and the Leibniz Universität Hannover (LUH) have developed a hybrid welding system with inductive preheating. This process can be used for reliable, high-quality, single-layer welding of high-strength, fine-grain structural steels up to a thickness of 20 mm.