Passively switched mid-infrared fibre lasers using saturable absorbers placed internally or externally to the geometry of the fibre. This project will create new pulsed mid-infrared fibre lasers based on original and recently developed passive switching techniques. An original class of fibre laser systems will be shown that is based on the internal placement of saturable absorbers within the optical fibre itself. A configuration such as this will enable the production of very simple pulsed laser ....Passively switched mid-infrared fibre lasers using saturable absorbers placed internally or externally to the geometry of the fibre. This project will create new pulsed mid-infrared fibre lasers based on original and recently developed passive switching techniques. An original class of fibre laser systems will be shown that is based on the internal placement of saturable absorbers within the optical fibre itself. A configuration such as this will enable the production of very simple pulsed laser systems of high efficiency and potentially high power. This will lead into the development of practical pulsed oscillator systems the output of which can be used directly or optically amplified for applications requiring high power.Read moreRead less
The photonic immunochip: retrieving individual Enzyme-linked Immuno Sorbent Assay (ELISA) array-units using optical waveguide multicolour fluorescence. Improving the sensitivity and availability of in-vitro immuno-diagnostic tests is a critical goal towards developing real time efficient tools for the detection of infectious diseases, cancers, allergies and auto-immune diseases. The goal is to increase the sensitivity of these tests by reducing background noise that has been a feature of the com ....The photonic immunochip: retrieving individual Enzyme-linked Immuno Sorbent Assay (ELISA) array-units using optical waveguide multicolour fluorescence. Improving the sensitivity and availability of in-vitro immuno-diagnostic tests is a critical goal towards developing real time efficient tools for the detection of infectious diseases, cancers, allergies and auto-immune diseases. The goal is to increase the sensitivity of these tests by reducing background noise that has been a feature of the commonly used ELISA technology. This will be achieved by developing a novel optical integrated waveguide array supporting a large range of distributed tests, including several based on a novel multi-colour detection scheme. This massively parallel approach will underpin a new generation of low-cost, efficient diagnostic tests.Read moreRead less
Ultra-sensitivity through resonances in photonic bandgap fibres. The project will develop innovative biochemical sensors with extreme sensitivity using recently discovered physical processes in novel holey optical fibres. These sensors will be able to detect biological molecules, toxins or dangerous chemicals in minute concentrations, in very small sample sizes. The sensors can be mass-produced cheaply with current fabrication facilities within Australia, enabling their widespread use for water ....Ultra-sensitivity through resonances in photonic bandgap fibres. The project will develop innovative biochemical sensors with extreme sensitivity using recently discovered physical processes in novel holey optical fibres. These sensors will be able to detect biological molecules, toxins or dangerous chemicals in minute concentrations, in very small sample sizes. The sensors can be mass-produced cheaply with current fabrication facilities within Australia, enabling their widespread use for water quality monitoring, environmental monitoring, threat detection, and rapid and reliable diagnosis in medicine.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
Devices that use Ion Channels. The proposed device would supply the community of researchers in Australia and internationally with new techniques to enable them to quickly and conveniently investigate properties of ion channels and to speed the screening of potential ion channel targets for pharmaceutical hits and leads. In addition, the tethered membrane technology will be developed to fill an unmet need for a quick and biologically relevant test of EMC hazards. This will enhance the science an ....Devices that use Ion Channels. The proposed device would supply the community of researchers in Australia and internationally with new techniques to enable them to quickly and conveniently investigate properties of ion channels and to speed the screening of potential ion channel targets for pharmaceutical hits and leads. In addition, the tethered membrane technology will be developed to fill an unmet need for a quick and biologically relevant test of EMC hazards. This will enhance the science and technology infrastructure within Australia, taking it into original and exciting directions, contribute to training young Australian scientists and students, as well as enhance Australia's competitive position in the field of nanobiotechnology.Read moreRead less
Optical supercontinuum generation from high pulse-energy optical sources. The aim of this project is to develop a broadband and high brightness optical fibre source based on optical supercontinuum generation (i.e. low-coherence optical signals with octave or more bandwidth). Unlike similar sources demonstrated recently which rely on expensive bulk femtosecond pump lasers, this source will be pumped by a large pulse-energy optical fibre laser and use stimulated Raman scattering to seed the contin ....Optical supercontinuum generation from high pulse-energy optical sources. The aim of this project is to develop a broadband and high brightness optical fibre source based on optical supercontinuum generation (i.e. low-coherence optical signals with octave or more bandwidth). Unlike similar sources demonstrated recently which rely on expensive bulk femtosecond pump lasers, this source will be pumped by a large pulse-energy optical fibre laser and use stimulated Raman scattering to seed the continuum generation. The primary outcome will be a compact low-cost all-fibre supercontinuum source with a wide range of applications in areas such as optical metrology, optical coherence tomography, and high resolution non-contact position and motion sensing.Read moreRead less
A wavelength-versatile visible laser for ophthalmic instrumentation. Treatment of a wide range of retinal disorders can be enhanced by a range of treatment modalities using laser beams of different colours. The outcome of this project will be a new laser technology for ophthalmic applications which is unique in its versatility while reducing size and cost. This will allow our partner, Opto Global, to gain a unique market position for its ophthalmic products with flow-on benefits to the Austral ....A wavelength-versatile visible laser for ophthalmic instrumentation. Treatment of a wide range of retinal disorders can be enhanced by a range of treatment modalities using laser beams of different colours. The outcome of this project will be a new laser technology for ophthalmic applications which is unique in its versatility while reducing size and cost. This will allow our partner, Opto Global, to gain a unique market position for its ophthalmic products with flow-on benefits to the Australian economy and ultimately benefits to the community through improved clinical efficacy and patient outcomes. The frontier technology represented by these new laser devices is also applicable to other industries including medical aesthetics, colour projection and display, and defence systems.Read moreRead less
Quantification of the Remineralisation of Enamel. This project has three specific aims:
1. To quantify the ultrastructure and mechanisms of remineralisation of enamel using scanning and transmission electron microscopy.
2. To determine the mechanical properties of remineralised tissue and compare with those of sound enamel.
3. To develop an in-vivo optical fibre probe for monitoring and quantifying the changes of mineralised carious tissue during remineralisation.
This project will enable ....Quantification of the Remineralisation of Enamel. This project has three specific aims:
1. To quantify the ultrastructure and mechanisms of remineralisation of enamel using scanning and transmission electron microscopy.
2. To determine the mechanical properties of remineralised tissue and compare with those of sound enamel.
3. To develop an in-vivo optical fibre probe for monitoring and quantifying the changes of mineralised carious tissue during remineralisation.
This project will enable patients prone to orthodontic induced root resorption to be identified and also to assist with validating repair of enamel tooth structure in a non-surgical manner. It is anticipated to result in the development of a novel fibre optic instrument with applications beyond dentistry.
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Microfibre photonics: function densification on a wavelength scale. The project will contribute to Australia's nanoscale device research and nanomanufacturing development. The project will create microfibre fabrication technologies for the creation of new optical systems of miniature proportions that will be used for cell illumination, for the creation of sensors for detection in small environments and as light tools for fundamental experiments in physics. Specialist fabrication methods will be ....Microfibre photonics: function densification on a wavelength scale. The project will contribute to Australia's nanoscale device research and nanomanufacturing development. The project will create microfibre fabrication technologies for the creation of new optical systems of miniature proportions that will be used for cell illumination, for the creation of sensors for detection in small environments and as light tools for fundamental experiments in physics. Specialist fabrication methods will be developed that will add to the nation's skill base. The outcomes of the project will enhance Australia's knowledge capacity, research capability and will contribute significantly to each of the National Research Priorities.Read moreRead less
Developing vehicle-based advanced warning countermeasures for driver fatigue. Driver fatigue is a major problem in Australia in terms of health, road safety and economic impact. Countermeasures to combat the influence of driver fatigue have been limited to public campaign strategies like resting every 2 hours. There has been little robust research on developing on-road countermeasures that could warn the driver of their fatigue status. This proposed project involves a collaboration with Compumed ....Developing vehicle-based advanced warning countermeasures for driver fatigue. Driver fatigue is a major problem in Australia in terms of health, road safety and economic impact. Countermeasures to combat the influence of driver fatigue have been limited to public campaign strategies like resting every 2 hours. There has been little robust research on developing on-road countermeasures that could warn the driver of their fatigue status. This proposed project involves a collaboration with Compumedics Ltd, a leading medical device company, to conduct sophisticated research into developing an EEG and wheel behaviour fatigue countermeausure. We will further explore EEG and wheel behaviour patterns associated with fatigue, investigate noise control strategies, and conduct laboratory and on road field trials of the fatigue monitor. If this device is able to assess fatigue reliably and warn drivers in sufficient time to avert accidents, then substantial economic and social benefits will occur.Read moreRead less