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Low threshold photonic crystal microlasers. The aims of this project are to develop detailed finite-difference time-domain numerical models of active photonic crystal structures, and to use them to optimise the design and performance of photonic-crystal-based devices, especially micro-cavity lasers. Photonic crystal microlasers have the potential to provide very efficient and low noise laser sources in micron-sized cavities, however the simplistic structures used to realise these lasers to date ....Low threshold photonic crystal microlasers. The aims of this project are to develop detailed finite-difference time-domain numerical models of active photonic crystal structures, and to use them to optimise the design and performance of photonic-crystal-based devices, especially micro-cavity lasers. Photonic crystal microlasers have the potential to provide very efficient and low noise laser sources in micron-sized cavities, however the simplistic structures used to realise these lasers to date provide sub-optimal performance. Innovative designs with improved performance will be developed by tailoring both the optical and thermal properties of planar photonic crystal stuctures. Devices designed during this project will subsequently be fabricated at facilities in France.Read moreRead less
Studies of near-field optical emission from waveguides and photonic crystals. Advanced optical materials and photonic devices require microscopic feature sizes close to the wavelength of light, challenging the limits of conventional fabrication and characterisation techniques (often developed in parallel). With extensive expertise in near-field optical modelling, Dr Rahmani will target specific problems associated with the characterisation of actual photonic devices. This will improve device de ....Studies of near-field optical emission from waveguides and photonic crystals. Advanced optical materials and photonic devices require microscopic feature sizes close to the wavelength of light, challenging the limits of conventional fabrication and characterisation techniques (often developed in parallel). With extensive expertise in near-field optical modelling, Dr Rahmani will target specific problems associated with the characterisation of actual photonic devices. This will improve device design and fabrication, enabling the development of more efficient, compact lasers and other devices. Economic and social benefits are expected from resulting improvements in optical processing, and the potential for new jobs and industries in this field.Read moreRead less
Preparation and analysis of amorphous GaN thin films. Researchers in New Zealand have developed novel processing techniques to prepare amorphous and partially crystalline gallium nitride thin films with potential application as green-blue-UV opto-electronic devices. However, characterization of the film structure using electron microscopy is essential to understand the relationship between processing conditions and opto-electronic properties. The aim of this project is to draw together specialis ....Preparation and analysis of amorphous GaN thin films. Researchers in New Zealand have developed novel processing techniques to prepare amorphous and partially crystalline gallium nitride thin films with potential application as green-blue-UV opto-electronic devices. However, characterization of the film structure using electron microscopy is essential to understand the relationship between processing conditions and opto-electronic properties. The aim of this project is to draw together specialist expertise and equipment that allows integration of microscopy into the development of these films. Australian researchers will gain access to specialized preparation and testing facilities in New Zealand, whilst researchers from New Zealand will perform structural analysis of these films in Australia.Read moreRead less
Optoelectronic properties of low-dimensional semiconductor systems and semiconductor nanostructures under terahertz free-electron laser radiation. The recent application of terahertz (THz) free-electron lasers (FELs) to scientific investigation into low-dimensional semiconductor systems and semiconductor nanostructures has opened up a new field of research in semiconductor optoelectronics. This project will conduct a joint experimental and theoretical study of how these novel systems interact w ....Optoelectronic properties of low-dimensional semiconductor systems and semiconductor nanostructures under terahertz free-electron laser radiation. The recent application of terahertz (THz) free-electron lasers (FELs) to scientific investigation into low-dimensional semiconductor systems and semiconductor nanostructures has opened up a new field of research in semiconductor optoelectronics. This project will conduct a joint experimental and theoretical study of how these novel systems interact with intense THz laser fields. Experimentally, we plan to use Beijing FELs in China to study optoelectronic properties in GaAs-and GaN based systems. Theoretically, we intend developing fundamental new approaches to theory of electron interactions with intense laser fields in semiconductors and relating theoretical results to experiments and experimental findings.Read moreRead less
Photonic Crystals and Microstructured Optical Fibres for Device Applications. Photonic crystals and microstructured optical fibres, which are amongst the most exciting fields of modern optics and photonics, are set to underpin developments in the next generation of ultrahigh-bandwidth communications systems, the functionalities of which will be truly all-optical. This project will bring together of two leading research groups in these areas, enhancing their collaboration, complementing their ex ....Photonic Crystals and Microstructured Optical Fibres for Device Applications. Photonic crystals and microstructured optical fibres, which are amongst the most exciting fields of modern optics and photonics, are set to underpin developments in the next generation of ultrahigh-bandwidth communications systems, the functionalities of which will be truly all-optical. This project will bring together of two leading research groups in these areas, enhancing their collaboration, complementing their expertise, and enabling them to develop new theoretical and computational tools to facilitate device applications. The program will coordinate research over a broad front and bring real benefits to young researchers in both France and Australia.Read moreRead less