Fibres for Visible and Mid-IR Lasers

Chairs

MC

Maria Chernysheva
Leibniz Institute of Photonic Technology (DE)

PL

Pavel Loiko
CIMAP, Université de Caen Normandie (FR)

Synopsis

Silica fibres have long provided the foundation for modern photonics — from telecommunications to high-power fibre lasers. However, their intrinsic material limitations, particularly in the visible and beyond the 2 µm wavelength range, constrain access to emerging spectral domains that are increasingly relevant for sensing, high-resolution imaging, biophotonics, and spectroscopy.
Rare-earth-doped fluoride-based fibres, characterised by low phonon energy and broad infrared transparency, present a powerful alternative. They enable efficient lasing from the visible to the deep mid-infrared, paving the way for compact, efficient, and spectrally versatile light sources. 
This focused session will bring together researchers advancing the science and technology of fluoride optical fibres - spanning material design, fabrication, optical spectroscopy, and laser applications. By bridging material science, photonic engineering, and laser physics, this session aims to showcase how fluoride fibres are enabling new wavelength regimes and driving the next generation of optical sources. 

Topics

  • Novel fluoride glass compositions and fibre architectures for broadband emission and high doping levels
  • Fibre post-processing, structuring, and integration approaches
  • Spectroscopic investigations of rare-earth ions in low-phonon-energy hosts
  • Recent advances in visible and mid-infrared fibre lasers based on fluoride fibres