Conference Agenda

Session

FS Visible and Mid-IR S2: Fibres for Visible and Mid-IR Lasers

Time:

Tuesday, 25/Aug/2026:

3:30pm - 5:00pm

Location: Lydik

Session Abstract

Presentations

3:30pm - 3:45pm

Laser Operation of Er,Dy:InF3 Fiber

Saad Hatim¹, Kirill Eremeev¹, Thiphaine Rault², Jean Letourneur², Solenn Cozic², Said Idlahcen¹, Pierre-Henry Hanzard¹, Thomas Godin¹, Ngoc Quynh Hoa Nguyen³, Pavel Loiko³, Patrice Camy³, Alain Braud³, Ammar Hideur¹

¹CORIA UMR 6614, CNRS-INSA-Université de Rouen Normandie, 76801 Saint Etienne du Rouvray, France; ²Le Verre Fluoré, rue Gabriel Voisin, Campus de Ker-Lann, 35170 Bruz, France; ³Centre de Recherche sur les Ions, les Matériaux et la Photonique (CIMAP), UMR 6252 CEA-CNRS ENSICAEN, Université de Caen Normandie, 6 Boulevard Maréchal Juin, 14050 Caen, France

Er3+,Dy3+-codoped fluoroindate (InF3) double-clad fiber exhibits broadband mid-infrared emission extending up to 4 μm, due to efficient Er3+ → Dy3+ energy transfer. Continuous-wave lasing at 3.3 μm was demonstrated. These results highlight its promise for widely tunable mid infrared fiber lasers.

3:45pm - 4:00pm

Lasing of Rhodamine 6G in Bulk and in a Hollow-Core Fiber Optofluidic System

Katarzyna Rechcińska^1,2, Mateusz Winkowski¹, Adam Filipkowski^1,2, Monika Adamowska³, Bartosz Pałuba¹, Dariusz Pysz¹, Ryszard Buczyński^1,2, Tadeusz Stacewicz¹

¹Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland; ²Institute of Microelectronics and Photonics, Łukasiewicz Research Network, Al. Lotników 32/46, 02-668 Warsaw, Poland; ³Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland

We compare the laser emission of Rhodamine 6G in ethanol in a quartz cuvette and in an optofluidic system based on a hollow-core anti-resonant fiber (HC-ARF) under transverse pumping by 532 nm 10 ns pulses. Both systems exhibit similar concentration-dependent spectral properties, including emission redshift and linewidth narrowing. This indicates that the emission is primarily governed by intrinsic dye properties. A systematic shift toward longer wavelengths is observed in the fiber geometry, which can be attributed to propagation-induced reabsorption and the spectral transmission characteristics of the HC-ARF.

4:00pm - 4:30pm
INVITED

Rare-earth doped soft glasses and fibres: from fundamental insights to laser and sensing applications

Heike Ebendorff-Heidepriem

Adelaide University, Australia

Rare earth (RE) ion doped soft glasses have found widespread and diverse usage, including fundamental investigation of the local environment, prototyping for testing new sensing and imaging concepts, and mid-infrared lasers for sensing and surgery. This talk presents an overview of the versatility of research on rare earth doped heavy metal oxide, fluoride-phosphate and fluoride glasses and fibres.

4:30pm - 4:45pm

Material and optical properties change in ZBLAN fibre under femtosecond laser irradiation at 800 nm

Kirill Grebnev¹, Ji Eun Bae², Pavel Loiko², Maria Chernysheva¹

¹Leibniz Institute of Photonic Technology, Jena, Germany; ²Centre de Recherche sur les Ions, les Matériaux et la Photonique, Caen, France

The study focuses on analysing refractive index changes and material modifications in ZBLAN fibres, induced by process of femtosecond writing of fibre Bragg gratings at wavelength of 800 nm. Experimental results show a refractive index variation on the order of 10⁻³ and highly regular grating morphology. Micro-Raman spectroscopy reveals only minor structural changes in the glass matrix and no evidence of crystallisation or significant bond breaking. Periodic modulation of Raman signals confirms the grating structure. These findings improve understanding of photosensitivity in fluoride fibres and provide guidance for optimising femtosecond laser inscription conditions while minimising unwanted material alterations.