Nonlinear Fiber Lasers With Tailored Pulse Properties 

Our Research

We develop novel fiber-based laser systems for the generation of ultrashort light pulses with precisely tailored temporal and spectral characteristics. A particular focus lies on the short-wave and mid-infrared spectral regions, which coincide with the vibrational absorption bands of many biomolecules and therefore offer high potential for biomedical applications.

The vision of the group is to investigate fundamental concepts of nonlinear ultrashort-pulse dynamics as well as the self-organization of coherent structures in laser cavities. Pulse formation is deliberately controlled through intrinsic nonlinear and dispersive effects within the fiber, instead of relying on conventional ultrafast modulators. This allows for the generation of ultrashort pulses in simple compact and reliable laser configurations.

Another key research focus is the exploration of suitable optical materials and fiber geometries with tailored dispersion, rare-earth doping profiles, and power-handling characteristics for extended wavelength operation into the mid-infrared. The group plans to bring a new level of integration of SWIR and mid-IR systems through the in-house development of essential optical components, such as pump combiners, isolators, filters, and couplers, specifically adapted to the thermal and optical properties of SWIR and Mid-IR transparent glasses.

The developed laser sources serve both to study the underlying physical processes and to enable efficient frequency conversion into spectral regions that are specifically matched to molecular vibrational bands. In this way, the junior research group bridges fundamental laser physics and application-oriented photonics.

Research Focus Areas

Ultrashort-Pulse
Fiber Laser Systems

Development of novel fiber-based laser sources for the generation of ultrashort pulses, including extension into the SWIR and mid-infrared spectral range (2–5 µm)

Fiber Materials & Components for the Mid-IR

Investigation of new optical fiber materials, tailored control of dispersion and nonlinearity, and development of fiber-integrated components

Nonlinear Ultrashort-Pulse
Dynamics

Fundamental research on nonlinear wave dynamics, coherent structures, and self-organization in fiber laser cavities

Collaborations and Networks

The junior research group Ultrashort-Pulse Fiber Lasers is embedded in international and interdisciplinary research contexts and collaborates with partners from laser physics, fiber technology, and nonlinear photonics. These collaborations support both the investigation of fundamental nonlinear dynamics in fiber lasers and the development of application-oriented ultrashort-pulse laser sources.

Within Leibniz IPHT, there are close collaborations with research units in fiber research, including the working groups Holographic Endoscopy and Hybrid Fibers, as well as the Competence Center for Optical Specialty Fibers (KSF), and with working groups of the Department of Spectroscopy/Imaging, among others in the field of multimodal instrumentation. This cooperation enables the targeted development of novel ultrashort-pulse fiber lasers for spectroscopic and imaging applications, particularly in the short-wave and mid-infrared spectral regions.

In addition, the junior research group collaborates with international partners, including Prof. Sergej Turitsyn and Prof. Antonio Perego (Aston University, United Kingdom), Prof. Goëry Genty (Tampere University, Finland), Prof. Fabio Prudenzano and Dr. Fabio Anelli (Polytechnic University of Bari, Italy), Prof. Alexander Fuerbach (Macquarie University, Australia), Prof. Robert Buczynski (University of Warsaw, Poland), as well as Prof. Pavel Peterka and Prof. Pavel Honzatko (Institute of Photonics and Electronics, Czech Academy of Sciences).

Selected Projects

Laser Concepts for Efficient Ultrashort Pulse Generation

Heisenberg Programme: Shaping the ultrashort pulse dynamics in mid-infrared fibre lasers

Fibre-Based Laser Systems for the Mid-Infrared

Robust enhancement of all-fibre laser for leveraging advances of Mid-IR emission

Quantum Algorithms for the Simulation of Photonic Wave Phenomena

NOA (B6): Nonlinear wave interaction in quantum nanomaterials

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