Our research focuses on scientific applications of photonic crystal fibre (PCF), a type of microstructured fibre proposed by Philip Russell in 1991. His group reported the first example of a working PCF in 1996, and since that time many groups all over the world have become active in developing PCF and exploring its applications. In the Division we are carrying out a wide range of experiments that make use of PCF's remarkable properties. These include low threshold nonlinear gas-laser devices, optomechanical devices based on nanoscale glass structures, optoacoustic modelocking of fibre lasers at GHz frequencies, biomedical sensors, supercontinuum sources, laser manipulation of particles in hollow-core PCF, and the curious properties of helically twisted PCF. The Division works in close collaboration with the Fibre Fabrication & Glass TDSU (Technical Development & Service Unit) at MPL.