Nick Weston
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View article: An incoherent light interferometer for single-shot, dual wavelength, areal topography measurements of a reflective surface
An incoherent light interferometer for single-shot, dual wavelength, areal topography measurements of a reflective surface Open
This paper introduces an interferometer for single-shot areal quantitative phase imaging at two wavelengths simultaneously, suitable for use with low coherence sources. It operates in reflection geometry with on-axis illumination, so that …
View article: Parametric investigation of ultrashort pulsed laser surface texturing on aluminium alloy 7075 for hydrophobicity enhancement
Parametric investigation of ultrashort pulsed laser surface texturing on aluminium alloy 7075 for hydrophobicity enhancement Open
Hydrophobicity plays a pivotal role in mitigating surface fouling, corrosion, and icing in critical marine and aerospace environments. By employing ultrafast laser texturing, the characteristic properties of a material’s surface can be mod…
View article: Multi-target two-photon dual-comb LiDAR
Multi-target two-photon dual-comb LiDAR Open
By substituting two-photon cross-correlation in a wide-bandgap photodiode for the coherent gating conventionally used in dual-comb ranging, two-photon dual-comb LiDAR exchanges data-intensive interferometric acquisition for a single time-s…
View article: Low-power laser manufacturing of copper tracks on 3D printed geometry using liquid polyimide coating
Low-power laser manufacturing of copper tracks on 3D printed geometry using liquid polyimide coating Open
A low-power laser patterning method enables the production of copper microcracks on 3D surfaces of some important 3D printing polymers, such as ABS and acrylate photopolymer. Tracks as small as 28 μm are produced with a simple 32 mW CV las…
View article: Birefringence analysis of aluminum-to-BK7 bonding methods under thermal stress
Birefringence analysis of aluminum-to-BK7 bonding methods under thermal stress Open
Ultrafast laser welding, hydroxide catalysis bonding (HCB) and adhesive bonding techniques were used to bond N-BK7 cubes to aluminum bases. Using a thermal chamber and polariscope, the stress induced birefringence was measured at temperatu…
View article: Two-photon dual-comb LiDAR
Two-photon dual-comb LiDAR Open
The interferometric signals produced in conventional dual-comb laser ranging require femtosecond lasers with long-term carrier-envelope offset frequency stability, and are limited to an upper sampling rate by radio-frequency aliasing consi…
View article: Two-Photon Dual-Comb LiDAR
Two-Photon Dual-Comb LiDAR Open
The interferometric signals produced in conventional dual-comb laser ranging require femtosecond lasers with long-term f_CEO stability, and are limited to an upper sampling rate by radio-frequency aliasing considerations. By using cross-po…
View article: Practical implementation of laser polishing on additively manufactured metallic components
Practical implementation of laser polishing on additively manufactured metallic components Open
Due to the continually increasing popularity of metal powder-based additive manufacturing as a production process in recent years, there has been growing research into improving the surface quality of the parts manufactured in this way. La…
View article: A Miniature Fibre-Optic Raman Probe Fabricated by Ultrafast Laser-Assisted Etching
A Miniature Fibre-Optic Raman Probe Fabricated by Ultrafast Laser-Assisted Etching Open
Optical biopsy describes a range of medical procedures in which light is used to investigate disease in the body, often in hard-to-reach regions via optical fibres. Optical biopsies can reveal a multitude of diagnostic information to aid t…
View article: A Miniature Fibre-optic Raman Probe Fabricated by Ultrafast Laser Assisted Etching
A Miniature Fibre-optic Raman Probe Fabricated by Ultrafast Laser Assisted Etching Open
Optical biopsy describes a range of medical procedures in which light is used to investigate disease in the body, often in hard-to-reach regions via optical fibres. Optical biopsies can reveal a multitude of diagnostic information to aid t…
View article: Laser polishing of additively manufactured CoCr and TI6AL4V parts and subsequent stress relieving
Laser polishing of additively manufactured CoCr and TI6AL4V parts and subsequent stress relieving Open
In recent years additive manufacturing (AM) has been a subject of increased interest and development as it offers many advantages over traditional subtractive machining techniques. As-built surface quality however is rarely suited to the d…
View article: SMASH: One-Shot Model Architecture Search through HyperNetworks
SMASH: One-Shot Model Architecture Search through HyperNetworks Open
Designing architectures for deep neural networks requires expert knowledge and substantial computation time. We propose a technique to accelerate architecture selection by learning an auxiliary HyperNet that generates the weights of a main…
View article: FreezeOut: Accelerate Training by Progressively Freezing Layers
FreezeOut: Accelerate Training by Progressively Freezing Layers Open
The early layers of a deep neural net have the fewest parameters, but take up the most computation. In this extended abstract, we propose to only train the hidden layers for a set portion of the training run, freezing them out one-by-one a…
View article: Neural Photo Editing with Introspective Adversarial Networks
Neural Photo Editing with Introspective Adversarial Networks Open
The increasingly photorealistic sample quality of generative image models suggests their feasibility in applications beyond image generation. We present the Neural Photo Editor, an interface that leverages the power of generative neural ne…
View article: Generative and Discriminative Voxel Modeling with Convolutional Neural Networks
Generative and Discriminative Voxel Modeling with Convolutional Neural Networks Open
When working with three-dimensional data, choice of representation is key. We explore voxel-based models, and present evidence for the viability of voxellated representations in applications including shape modeling and object classificati…
View article: Context-Aware Content Generation For Virtual Environments
Context-Aware Content Generation For Virtual Environments Open
Large scale scene generation is a computationally intensive operation, and added complexities arise when dynamic content generation is required. We propose a system capable of generating virtual content from non-expert input. The proposed …