Collaborative research is being carried out with colleagues in the Departments of Engineering Science and Physical and Theoretical Chemistry to apply laser diagnostic techniques pioneered in the group. Experiments in Engineering apply laser induced grating spectroscopy (LIGS) - a type of four-wave mixing -  developed for high-precision thermometry and pressure measurements in hostile environments including engines and hypersonic wind tunnels. This research aims to develop low-emission engines and efficient aero-engines to reduce climate-changing emissions of greenhouse gases. LIGS is also being applied in the Chemistry department to study plasma torches for medical applications. The group has also introduced a novel method for sensing of multiple gas species using a single laser source: Multi-mode Absorption Spectroscopy, MUMAS that has applications in atmospheric sensing and environmental monitoring. A list of group publications can be found at