All Outputs (818)

Distortion of visible daytime multi-conjugate adaptive optics control (2024)
Presentation / Conference Contribution
Kongkaew, P., Morris, T. J., & Osborn, J. (2024, June). Distortion of visible daytime multi-conjugate adaptive optics control. Presented at Adaptive Optics Systems IX, Yokohama, Japan

Daytime optical observations, including solar telescope and free-space optical communication, experience strong turbulence and scintillation. These conditions cause control problems in Multi-Conjugate Adaptive Optics (MCAO). Considering an MCAO setup... Read More about Distortion of visible daytime multi-conjugate adaptive optics control.

HARMONI at ELT: project status and instrument overview (2024)
Presentation / Conference Contribution
Thatte, N. A., Melotte, D., Neichel, B., Le Mignant, D., Rees, P., Clarke, F., Ferraro-Wood, V., Gonzalez, O., Jones, M., Álvarez Urueña, A., Vilaseca, H., Arribas Mocoroa, S., Caballero, J. A., Carracedo Carballal, G. J., Estrada Piqueras, A., Ferro, I., García García, M., Lamperti, I., Pereira Santaella, M., Perna, M., …York, A. (2024, June). HARMONI at ELT: project status and instrument overview. Presented at Ground-based and Airborne Instrumentation for Astronomy X, Yokohama, Japan

The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design (2024)
Presentation / Conference Contribution
Richard, J., Giroud, R., Laurent, F., Krajnovic, D., Jeanneau, A., Bacon, R., Abreu, M., Adamo, A., Araujo, R., Bouché, N., Brinchmann, J., Cai, Z., Castro Rodriguez, N., Calcines, A., Chapuis, D., Claeyssens, A., Cortese, L., Daddi, E., Davison, C., Goodwin, M., …Zheng, J. (2024, June). The Blue Multi Unit Spectroscopic Explorer (BlueMUSE) on the VLT: science drivers and overview of instrument design. Presented at Ground-based and Airborne Instrumentation for Astronomy X, Yokohama, Japan

Collaborative Operational Security: The future of Cybersecurity for Research and Education (2024)
Presentation / Conference Contribution
Crooks, D., Acris, J., Atherton, L., Clark, P., Cutrina, P., Jordan, D., McKee, S., & Vâlsan, L. (2023, May). Collaborative Operational Security: The future of Cybersecurity for Research and Education. Presented at 26th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2023), Norfolk, Virginia

No single organisation has the resources to defend its services alone against most modern malicious actors and so we must protect ourselves as a community. In the face of determined and well-resourced attackers, we must actively collaborate in this e... Read More about Collaborative Operational Security: The future of Cybersecurity for Research and Education.

Linear vs. Non-linear Behaviour in Ion Irradiation Nanostructuring of Nickel and Silicon Surfaces (2024)
Presentation / Conference Contribution
Mekki, M. B., & Hunt, M. R. C. Linear vs. Non-linear Behaviour in Ion Irradiation Nanostructuring of Nickel and Silicon Surfaces

Spontaneous nanometre-scale quasi-periodic ripple-like structures are formed at the surface of polycrystalline Ni films and Si(111) single crystal wafers by irradiation with a broad Ar+ ion beam at room temperature and studied with Atomic Force Micro... Read More about Linear vs. Non-linear Behaviour in Ion Irradiation Nanostructuring of Nickel and Silicon Surfaces.

Structured illumination for super resolution terahertz imaging (2024)
Presentation / Conference Contribution
Fleming, J. P., Downes, L. A., Girkin, J. M., & Weatherill, K. J. (2024, January). Structured illumination for super resolution terahertz imaging. Presented at Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVII, San Francisco, United States

Our recent THz imaging system performs full-frame high-speed imaging (12000 fps) by exploiting efficient THz-to-optical conversion in an excited Caesium atomic vapour. Structured Illumination Microscopy (SIM) has revolutionized optical microscopy pus... Read More about Structured illumination for super resolution terahertz imaging.

TASI lectures on Phase Transitions, Baryogenesis, and Gravitational Waves (2024)
Presentation / Conference Contribution
Croon, D. (2022, June). TASI lectures on Phase Transitions, Baryogenesis, and Gravitational Waves. Presented at 2022 Theoretical Advanced Study Institute in Particle Theory, University of Colorado, Boulder

These lectures, presented at the 2022 TASI summer school, give an introductory overview of first-order phase transitions in the early Universe, baryogenesis, and the resulting gravitational wave phenomenology. We introduce thermal field theory via th... Read More about TASI lectures on Phase Transitions, Baryogenesis, and Gravitational Waves.

Optical satellite links at DLR (2023)
Presentation / Conference Contribution
Fuchs, C., Moll, F., Poliak, J., Reeves, A., & Schmidt, C. (2023, January). Optical satellite links at DLR. Presented at Free-Space Laser Communications XXXV, San Francisco, United States

The 24hSHIMM: a continuous day and night turbulence monitor for optical communications (2023)
Presentation / Conference Contribution
Griffiths, R., Osborn, J., Farley, O., Butterley, T., Townson, M., & Wilson, R. (2023, January). The 24hSHIMM: a continuous day and night turbulence monitor for optical communications. Presented at Free-Space Laser Communications XXXV, San Francisco, United States

We present the 24-hour Shack-Hartmann Image Motion Monitor (24hSHIMM), the first truly continuous, 24-hour optical turbulence monitor. Atmospheric optical turbulence is a significant limitation for free-space optical communications and other technolo... Read More about The 24hSHIMM: a continuous day and night turbulence monitor for optical communications.

Atmospheric optical turbulence analysis in London’s financial district (2023)
Presentation / Conference Contribution
Westerby-Griffin, L., Osborn, J., Farley, O. J. D., Griffiths, R., & Love, G. D. (2023, January). Atmospheric optical turbulence analysis in London’s financial district. Presented at Free-Space Laser Communications XXXV, San Francisco, United States

Atmospheric optical turbulence causes signal loses in laser propagation. Here we present vertical measurements of optical turbulence taken in London’s financial district. Additionally, we demonstrate a method of modelling atmospheric states in simula... Read More about Atmospheric optical turbulence analysis in London’s financial district.

Atmospheric optical turbulence measurements at varying elevation angles (2023)
Presentation / Conference Contribution
Westerby-Griffin, L., Osborn, J., Farley, O. J. D., Griffiths, R., & Love, G. D. (2023, January). Atmospheric optical turbulence measurements at varying elevation angles. Paper presented at Free-Space Laser Communications XXXV, San Francisco, United States

Denoising Diffusion Probabilistic Models on SO(3) for Rotational Alignment (2022)
Presentation / Conference Contribution
Leach, A., Schmon, S. M., Degiacomi, M. T., & Willcocks, C. G. (2022, April). Denoising Diffusion Probabilistic Models on SO(3) for Rotational Alignment. Presented at ICLR 2022 Workshop on Geometrical and Topological Representation Learning

Probabilistic diffusion models are capable of modeling complex data distributions on high-dimensional Euclidean spaces for a range applications. However, many real world tasks involve more complex structures such as data distributions defined on mani... Read More about Denoising Diffusion Probabilistic Models on SO(3) for Rotational Alignment.

Few-Layer Graphene As an Electrode, Electrode Additive and an Interfacial Layer in Aqueous Supercapacitors (2022)
Presentation / Conference Contribution
Williams, R., Sukumaran, S., Abbas, Q., & Hunt, M. (2022, October). Few-Layer Graphene As an Electrode, Electrode Additive and an Interfacial Layer in Aqueous Supercapacitors

Exploring the application of image slicers for the EUV for the next generation of solar space missions (2022)
Presentation / Conference Contribution
Calcines-Rosario, A., Matthews, S., & Reid, H. (2022, December). Exploring the application of image slicers for the EUV for the next generation of solar space missions. Presented at Space Telescopes and Instrumentation 2022: Ultraviolet to Gamma Ray

The Sun is a privileged place to study particle acceleration, a fundamental astrophysical problem throughout the universe. The extreme ultra-violet (EUV) contains a number of narrow emission lines formed in all layers of the solar atmosphere whose pr... Read More about Exploring the application of image slicers for the EUV for the next generation of solar space missions.

Correction of photometric scintillation noise via tomographic wavefront sensing: simulation and on-sky demonstration (2022)
Presentation / Conference Contribution
Hartley, K., Farley, O., Townson, M. J., Osborn, J., & Wilson, R. W. (2022, July). Correction of photometric scintillation noise via tomographic wavefront sensing: simulation and on-sky demonstration. Presented at Adaptive Optics Systems VIII, Montréal, Canada

CUBES: application of image slicers to reformat the field for two spectral resolving powers (2022)
Presentation / Conference Contribution
Calcines Rosario, A. Z., Wells, M., O’Brien, K. S., Morris, S. L., Seifert, W., Zanutta, A., Evans, C., & Di Marcantonio, P. (2022, December). CUBES: application of image slicers to reformat the field for two spectral resolving powers. Presented at Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V

The Cassegrain U-Band Efficient Spectrograph (CUBES) is a high-efficiency spectrograph designed for observations from 305 to 400nm. It will be integrated at a Cassegrain focus of the Very Large Telescope (VLT). The image slicer technology is applied... Read More about CUBES: application of image slicers to reformat the field for two spectral resolving powers.

CUBES, the Cassegrain U-Band Efficient Spectrograph (2022)
Presentation / Conference Contribution
Cristiani, S., Alcalá, J., Alencar, S., Balashev, S., Bastian, N., Barbuy, B., Battino, U., Calcines, A., Calderone, G., Cambianica, P., Carini, R., Carter, B., Cassisi, S., Castilho, B., Cescutti, G., Christlieb, N., Cirami, R., Coretti, I., Cooke, R., Covino, S., …Zanutta., A. (2022, August). CUBES, the Cassegrain U-Band Efficient Spectrograph. Presented at SPIE Astronomical Telescopes + Instrumentation 2022

In the era of Extremely Large Telescopes, the current generation of 8-10m facilities are likely to remain competitive at ground-UV wavelengths for the foreseeable future. The Cassegrain U-Band Efficient Spectrograph (CUBES) has been designed to provi... Read More about CUBES, the Cassegrain U-Band Efficient Spectrograph.

WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques (2022)
Presentation / Conference Contribution
Bharmal, N. A., Bramall, D., Calcines Rosario, A. Z., Morris, T. J., Schmoll, J., & Staykov, L. (2022, December). WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques. Presented at Adaptive Optics Systems VIII

WIVERN is a testbed for laboratory experiments in laser-based wavefront sensing. It emulates laser uplink from a 4m telescope with 1.6 arcsec seeing and laser back-scattering from up to 20 km. Currently there are three current wavefront sensing capab... Read More about WIVERN: a laboratory experiment for testing novel laser-based wavefront sensing techniques.

The HR image slicer for GNIRS at Gemini North: optical design and performance (2022)
Presentation / Conference Contribution
Calcines Rosario, A., Dubbeldam, C. M., Sharples, R., Bourgenot, C., Diaz, R., & Stephens, A. W. (2022, December). The HR image slicer for GNIRS at Gemini North: optical design and performance. Presented at Ground-based and Airborne Instrumentation for Astronomy IX

GNIRS (Gemini Near-InfraRed Spectrograph) is a multi-function spectrograph at Gemini North telescope offering four observational modes in the spectral range of 0.8 to 5.4 µm. It provides 2-pixel spectral resolutions from 1,200 up to 18,0000 and has s... Read More about The HR image slicer for GNIRS at Gemini North: optical design and performance.

CUBES: a UV spectrograph for the future (2022)
Presentation / Conference Contribution
Covino, S., Cristiani, S., Alcala', J., Alencar, S., Balashev, S., Barbuy, B., Bastian, N., Battino, U., Bissell, L., Bristow, P., Calcines, A., Calderone, G., Cambianica, P., Carini, R., Carter, B., Cassisi, S., Castilho, B., Cescutti, G., Christlieb, N., Cirami, R., …Zins, G. (2022, June). CUBES: a UV spectrograph for the future. Presented at HACK100: Past, Present and Future of Astrophysical Spectroscopy, Trieste, Italy

In spite of the advent of extremely large telescopes in the UV/optical/NIR range, the current generation of 8-10m facilities is likely to remain competitive at ground-UV wavelengths for the foreseeable future. The Cassegrain U-Band Efficient Spectrog... Read More about CUBES: a UV spectrograph for the future.