Pushing the Limits of Fluoride Glass Transmission to Create 4 Micron Class Fibre Laser Systems
Abstract
A summarization of efforts to understand and design fibre lasers for emission beyond 4 m is provided. It is widely known that ZBLAN glass supports phonon energies that are ~560 cm-1 and it may support lasing beyond the current 4 m limit. The important outcomes from the project include: 1) It is shown through detailed numerical modelling that pulsed pumping of Dy-doped InF3 glass fibre will create the emission at 4.3 m 2) that doping rare earth ions into crystals and then doping the crystal into a fluoride glass could offer a solution for the future. This project is currently being funded by the Australian Government. 3) cooperative 3-ion energy transfer is operating in the Dy ion system when the concentrations are high (>3 mol.) and the inversions are high. This may be a beneficial process for the 4 m transition. 4) it is shown that co-doping Dy3 with Tm3 provides an effective route to excitation of the upper laser level of the 4 m transition that is diode pumpable and is potentially highly efficient.5) that effective fibre Bragg gratings can be written into InF3-glass optical fibre. This will be a key component to all future fibre 4 m-class fibre lasers.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 12, 2023
- Accession Number
- AD1226796
Entities
People
- Stuart D. Jackson
Organizations
- Macquarie University