Outputs (341)

2D measurements of plasma electron density using coherence imaging with a pixelated phase mask (2021)
Journal Article

In this paper, the pixelated phase mask (PPM) method of interferometry is applied to coherence imaging (CI)—a passive, narrowband spectral imaging technique for diagnosing the edge and divertor regions of fusion plasma experiments. Compared to previo... Read More about 2D measurements of plasma electron density using coherence imaging with a pixelated phase mask.

Broadband Multi-wavelength Properties of M87 during the 2017 Event Horizon Telescope Campaign (2021)
Journal Article

The KMOS galaxy evolution survey (KGES): the angular momentum of star-forming galaxies over the last ≍10 Gyr (2021)
Journal Article

We present the KMOS Galaxy Evolution Survey (KGES), a K-band Multi-Object Spectrograph (KMOS) study of the H α and [N II] emission from 288 K-band-selected galaxies at 1.2 ≲ z ≲ 1.8, with stellar masses in the range log10(M∗/M⊙)≈9 – 11.5. In this pap... Read More about The KMOS galaxy evolution survey (KGES): the angular momentum of star-forming galaxies over the last ≍10 Gyr.

Full Spectrum Fluorescence Lifetime Imaging with 0.5 nm Spectral and 50 ps Temporal Resolution (2021)
Journal Article

Feature issue introduction: applications of adaptive optics (2021)
Journal Article

This feature issue of Optics Express follows the 2020 Imaging and Applied Optics Congress and comprises of articles on the development and use of adaptive optics across the broad range of domains in which the technique has been applied - including at... Read More about Feature issue introduction: applications of adaptive optics.

3D Printing Neutron Detectors using Scintillating BN/ZnS Resin (2021)
Journal Article

In this paper we demonstrate that it is possible to produce low cost neutron-sensitive detectors using stereo-lithography additive manufacturing. A curable scintillating resin is made by mixing BN/ZnS with a commercially available UV resin. This resi... Read More about 3D Printing Neutron Detectors using Scintillating BN/ZnS Resin.

Global tip-tilt and high-order aberration correction with plenoptic wavefront sensors in closed-loop AO systems (2021)
Journal Article

The plenoptic wavefront sensor (PlWFS) has been proposed as being suitable for operating on extended objects in adaptive optics (AO) systems. We propose a new self-referencing method that uses the cell image of PlWFS as a correlation reference and en... Read More about Global tip-tilt and high-order aberration correction with plenoptic wavefront sensors in closed-loop AO systems.

A history of high-power laser research and development in the United Kingdom (2021)
Journal Article

The first demonstration of laser action in ruby was made in 1960 by T. H. Maiman of Hughes Research Laboratories, USA. Many laboratories worldwide began the search for lasers using different materials, operating at different wavelengths. In the UK, a... Read More about A history of high-power laser research and development in the United Kingdom.

The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet (2021)
Journal Article

We study the distribution and dynamics of the circumgalactic and intergalactic medium using a dense galaxy survey covering the field around the Q0107 system, a unique z ≈ 1 projected quasar triplet. With full Ly α coverage along all three lines-of-si... Read More about The relationship between gas and galaxies at z < 1 using the Q0107 quasar triplet.

Development of an 11-channel multi wavelength imaging diagnostic for divertor plasmas in MAST Upgrade (2021)
Journal Article

Divertor detachment and alternative divertor magnetic geometries are predicted to be promising approaches to handle the power exhaust of future fusion devices. In order to understand the detachment process caused by volumetric losses in alternative d... Read More about Development of an 11-channel multi wavelength imaging diagnostic for divertor plasmas in MAST Upgrade.

FASS: a turbulence profiler based on a fast, low-noise camera (2020)
Journal Article

The measurement of the atmospheric optical turbulence with a new scintillation profiler is described and demonstrated. The instrument, FASS (Full Aperture Scintillation Sensor), uses new fast and low-noise detectors to record and process sequences of... Read More about FASS: a turbulence profiler based on a fast, low-noise camera.

The evolution of gas-phase metallicity and resolved abundances in star-forming galaxies at z ≍ 0.6-1.8 (2020)
Journal Article

We present an analysis of the chemical abundance properties of ≈650 star-forming galaxies at z ≈ 0.6–1.8. Using integral-field observations from the K-band multi-object spectrograph (KMOS), we quantify the [N II]/H α emission-line ratio, a proxy for... Read More about The evolution of gas-phase metallicity and resolved abundances in star-forming galaxies at z ≍ 0.6-1.8.

LightBox: a multiwell plate illumination system for photoactive molecule characterization (2021)
Journal Article

Multiwell plates (MWPs) are the workhorses of the life sciences. However, biophotonics research with MWPs is limited, in part due to the lack of equipment suitable for photo‐irradiation of photoactive molecules in a MWP‐suitable, high‐throughput mann... Read More about LightBox: a multiwell plate illumination system for photoactive molecule characterization.

GPU Fast Convolution via the Overlap-and-Save Method in Shared Memory (2020)
Journal Article

We present an implementation of the overlap-and-save method, a method for the convolution of very long signals with short response functions, which is tailored to GPUs. We have implemented several FFT algorithms (using the CUDA programming language),... Read More about GPU Fast Convolution via the Overlap-and-Save Method in Shared Memory.

Cellular localisation of structurally diverse diphenylacetylene fluorophores (2020)
Journal Article

Fluorescent probes are increasingly used as reporter molecules in a wide variety of biophysical experiments, but when designing new compounds it can often be difficult to anticipate the effect that changing chemical structure can have on cellular loc... Read More about Cellular localisation of structurally diverse diphenylacetylene fluorophores.

Adaptive Optics pre-compensated laser uplink to LEO and GEO (2021)
Journal Article

We present the results from a Monte Carlo computer simulation of adaptive optics (AO) pre-compensated laser uplink propagation through the Earth’s atmospheric turbulence from the ground to orbiting satellites. The simulation includes the so-called po... Read More about Adaptive Optics pre-compensated laser uplink to LEO and GEO.

Early stage dental caries detection using near infrared spatial frequency domain imaging (2021)
Journal Article

Early stage dental caries can be remineralized without the need for “drill-and-fill” treatments that are more invasive and less permanent. However, early stage caries lesions typically present as a white spot on a white background, resulting in many... Read More about Early stage dental caries detection using near infrared spatial frequency domain imaging.

Gaia 18dvy: A New FUor in the Cygnus OB3 Association (2020)
Journal Article

We present optical–infrared photometric and spectroscopic observations of Gaia 18dvy, located in the Cygnus OB3 association at a distance of 1.88 kpc. Gaia 18dvy was noted by the Gaia alerts system when its light curve exhibited a gsim4 mag rise in 2... Read More about Gaia 18dvy: A New FUor in the Cygnus OB3 Association.

Mesoscale modelling of optical turbulence in the atmosphere: the need for ultrahigh vertical grid resolution (2020)
Journal Article

The high-fidelity modelling of optical turbulence is critical to the design and operation of a new class of emerging highly sophisticated astronomical telescopes and adaptive optics instrumentation. In this study, we perform retrospective simulations... Read More about Mesoscale modelling of optical turbulence in the atmosphere: the need for ultrahigh vertical grid resolution.

First Principle Simulator of a Stochastically Varying Image Plane for Photon-counting High Contrast Applications (2020)
Journal Article

Optical and near-infrared Microwave Kinetic Inductance Detectors, or MKIDs are low-temperature detectors with inherent spectral resolution that are able to instantly register individual photons with potentially no false counts or readout noise. These... Read More about First Principle Simulator of a Stochastically Varying Image Plane for Photon-counting High Contrast Applications.