Optical Materials and Structures
Developing new techniques to fabricate a wide range of novel glasses, structured glass preforms via extrusion, passive, active, doped and structured soft and silica fibres. Underpinning sensing, non-linear, laser and light sources in the mid-IR and beyond.
- Optical Materials and Structures Overview
IPAS has complete vertical integration of expertise and facilities, from modelling to device fabrication.
Key areas of strength include:
- Tellurite and fluoride glasses (both passive and active)
- Advanced preform technologies (extrusion and drilling based)
- Development of glasses and fibres capable of transmitting light in the mid-infrared that underpin new sensing platforms and lasers
- Custom silica fibres for fibre lasers, including air-clad rare-earth doped fibres
- Suspended and exposed core silica fibres for sensing.
- A suite of analytical, numerical and finite-element modelling tools to predict the optical properties of waveguides and fibres with complex structures
- New theoretic frameworks to explore waveguides and fibres with extreme properties and nanoscale features
- A pulse propagation model to predict how a pulse propagates along a fibre
- Waveguide and fibre design based on reversed engineering techniques
- A suite of numerical and finite-element modelling tools to find resonance modes of microsphere and microdisk cavities
- Fabrication of glasses and fibres
- Controlled atmosphere glass batching, melting and annealing
- Soft and hard glass preform extrusion
- Soft and hard glass preform ultrasonic milling
- Soft glass and silica fibre drawing
- High-resolution electron and atomic force/scanning near-field optical microscopes (AFM/SNOM)
- Transmission spectrometers and ellipsometers spanning from the ultraviolet to the far-infrared spectral region (200 nm-30 μm)
- Optical profiler to measure surface roughness
- Simultaneous thermal analysis (STA/TGA/DSC)
- Fibre loss measurement
- Our research ranges from fundamental science to application-driven design and development, including:
- Development of glasses with enhanced infrared transmission and optical nonlinearity
- Nanophotonic glasses created by embedding nanocrystals in glass
- Advanced technologies for processing and shaping glass
- Design and fabrication of micro and nanostructured soft glass and silica optical fibres
- Development of speciality doped, active and passive silica fibres, including single-mode germano-silica, rare-earth doped silica and double/triple clad fibres
- Advanced light propagation theory within optical fibres and planar waveguides.