Matthias Jäger

Dr. Matthias Jäger is a Researcher in the Department of Fiber Photonics at the Leibniz Institute for Photonic Technology (IPHT). His work focuses on advanced optical fiber development, particularly in doped materials and nonlinear laser dynamics.

• Core technologies: Thulium/Yb/Ho-doped fibers, periodic shadowing for stray light suppression, nonlinear loss management
• Instrumentation: High peak power laser systems, fluorescence lifetime analysis, multicore emission profiling

Research interests span laser physics, materials science, and optical engineering. Recent publications highlight breakthroughs in:

• Directional stability control for fiber ring lasers (2021-2024)
• Hybrid Tm:YAG crystal-derived fiber fabrication (2022)
• Nanoparticle-doped optical fibers (2024)
• 2 µm eye-safe laser systems (2024)
• Pr3+-doped nanocrystal fiber integration (2024)
• Thulium concentration optimization for laser efficiency (2025)

His work demonstrates expertise in fiber fabrication methods including:

• Modified Chemical Vapor Deposition (MCVD)
• Powder-sinter technology
• Molten-core processing
• REPUSIL fiber drawing