Imaging the invisible. This project aims to develop imaging technology to see and quantify objects normally invisible with X-rays. It will develop an X-ray imaging system that should provide orders of magnitude greater sensitivity to subtle changes in material composition than conventional radiography. It will devise quantitative image analysis tools for isolating specific materials of interest from complex multi-material samples, including low density components that often go undetected. Indust ....Imaging the invisible. This project aims to develop imaging technology to see and quantify objects normally invisible with X-rays. It will develop an X-ray imaging system that should provide orders of magnitude greater sensitivity to subtle changes in material composition than conventional radiography. It will devise quantitative image analysis tools for isolating specific materials of interest from complex multi-material samples, including low density components that often go undetected. Industries that could benefit significantly from this technology include airport security, the mining sector, agriculture, manufacturing quality control, and biomedical researchers studying anatomical form and function.Read moreRead less
Optical fibre devices for sideways delivery of laser light during keyhole surgery. Mulitmode optical fibres are typically used to deliver high power laser light which is emitted from the end of the fibre to irradiate tissue during surgery. For intravenous delivery of laser light in the treatment of cardiac fibrillation (heart flutter) we require a sideways-directed illuminating beam. However reliable methods of delivering high power laser light in a sideways-directed beam are not currently avai ....Optical fibre devices for sideways delivery of laser light during keyhole surgery. Mulitmode optical fibres are typically used to deliver high power laser light which is emitted from the end of the fibre to irradiate tissue during surgery. For intravenous delivery of laser light in the treatment of cardiac fibrillation (heart flutter) we require a sideways-directed illuminating beam. However reliable methods of delivering high power laser light in a sideways-directed beam are not currently available. Using the ultraviolet laser fibre processing expertise already developed at Macquarie University, we propose to develop and characterise novel fibre-based devices which would allow controllable delivery of light sideways.Read moreRead less
Dynamic multi-modal x-ray imaging. This project aims to create sensitive new methods of x-ray imaging that capture multiple image modalities with a single snapshot. Conventional x-ray imaging is widely used in a range of industries, but captures only a fraction of the rich information that is available in the x-ray wavefield. This project expects to extract additional image modalities to reveal x-ray-transparent features, and detect microscopic textures. By combining these capabilities with the ....Dynamic multi-modal x-ray imaging. This project aims to create sensitive new methods of x-ray imaging that capture multiple image modalities with a single snapshot. Conventional x-ray imaging is widely used in a range of industries, but captures only a fraction of the rich information that is available in the x-ray wavefield. This project expects to extract additional image modalities to reveal x-ray-transparent features, and detect microscopic textures. By combining these capabilities with the ability to capture images of a moving sample, this project will enable innovative biomedical and materials research studies, and develop new imaging technologies for use in security, hospitals and manufacturing. New methods of x-ray imaging will have wide-ranging benefits for society, the economy and healthcare.Read moreRead less
High-average-power all-solid-state lasers based on new crystalline Raman materials. We have recently made significant advances in development of all-solid-state intracavity Raman lasers generating multiwatt average powers in the near infrared and (by frequency doubling) visible spectrum, with important applications in biomedicine and remote sensing. A new generation of Raman crystals, especially tungstates, offer superior optical, mechanical and thermal properties, promising high Raman gains and ....High-average-power all-solid-state lasers based on new crystalline Raman materials. We have recently made significant advances in development of all-solid-state intracavity Raman lasers generating multiwatt average powers in the near infrared and (by frequency doubling) visible spectrum, with important applications in biomedicine and remote sensing. A new generation of Raman crystals, especially tungstates, offer superior optical, mechanical and thermal properties, promising high Raman gains and choice of Stokes frequency shift. The project will investigate a range of key issues for these materials including control of the Stokes wavelength, associated polarisation control, and pump-resonator configurations giving maximum Raman laser power and efficiency. The project will lead to state-of-the-art source technology with outstanding prospects for commercialisation and practical application.Read moreRead less
Non-destructing X-ray testing. This project aims to improve imaging with X-rays, providing better image quality with higher throughput at a lower radiation dose. It will develop an X-ray imaging system that provides orders of magnitude greater sensitivity for detecting low-density objects that are often invisible with conventional X-ray scanners, and quantitative image analysis tools that can isolate materials from complex multi-material samples and detect individual chemical elements. Significa ....Non-destructing X-ray testing. This project aims to improve imaging with X-rays, providing better image quality with higher throughput at a lower radiation dose. It will develop an X-ray imaging system that provides orders of magnitude greater sensitivity for detecting low-density objects that are often invisible with conventional X-ray scanners, and quantitative image analysis tools that can isolate materials from complex multi-material samples and detect individual chemical elements. Significant benefits from these technologies are expected in industries including airport security, mining, agriculture, manufacturing quality control, and in research fields from medicine to geology.Read moreRead less