WG 1

Materials, Fibres, Components and Technology

Chair: Kay SCHUSTER

Vice-Chairs: Maurizio FERRARI, Hrvoje GEBAVI, Virginie NAZABAL

WG1- Materials, Fibres, Components and Technology: This WG will deal with the development and characterisation of novel materials and fundamental components: Activities 1 and 2. The activity will be structured into three interplaying lines of research:

  1. Active materials for UV/visible/MIR direct generation and non-linear materials for supercontinuum generation. The Action members working on glass manufacturing and characterization will study new compositions and dopants to enhance the performance of existing materials and to explore new materials. The Action aims to study include low phonon energy glasses both oxide based (tellurite, germanate) as well as non-oxide as well (fluoride, chalcogenide). Dopants for light generation will include rare earth ions (Dy3+, Tb3+, Eu3+, Tm3+, Pr3+, etc.) while for nonlinear devices undoped glasses will be explored with compositions tuned to maximize non linearity while at the same time to minimize propagation loss.
  2. Development of fibres (including photonic crystal fibres) both active and passive. Novel passive fibres to provide efficient nonlinear effects in the UV and MIR will be developed. New fibre configurations will be explored for power scaling and to overcome constrains on peak power level in the IR wavelength interval. Beam quality degradation issues due to power scaling will also be addressed.
  3. New passive components for feedback (gratings), filtering, tuning and mode-locking (using fibre nonlinearity and new materials). The aim will be to move forward in integrating discrete components with the final objective of all-fibre sources in the MIR. The WG members will investigate the availability of suitable pump sources. Roundrobin activity will be planned to compare characterisation methods and potential standards will be proposed to the Special Interest Group. Multifunctional fibres will be explored to incorporate functions that are mainly currently carried out by non-fibre based components, e.g. polarization of light.

Main expected achievements: Novel active materials; Novel types of fibres and optical components, multifunctional fibres, flexible large mode area fibres. Complete characterisation of new laser materials and glass hosts; Novel non-linear materials; Development of ultra-low losses materials and fibres for UV and MIR devices; Development of new photonic crystal fibre concepts to enhanced continuum generation in the UV and MIR (up to 14 micron); new tuning and modelocking techniques.

Cooperation within WG 1