Prof. Stephen J. Sweeney Profile

Prof. Stephen J. Sweeney

Professor of Photonics and Nanotechnology at University of Glasgow

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 13 March 2024 Presentation

Presentation

Design and optimisation of MBE-grown GaAs-based "W"-lasers for O-band applications

Dominic Duffy, Igor Marko, Matthew Bentley, Andrew Marshall, Samir Rihani, Graham Berry, Michael Robertson, John Rawsthorne, Peter Carrington, Stephen Sweeney

Proceedings Volume PC12905, PC1290501 (2024) https://doi.org/10.1117/12.3002312

KEYWORDS: Design and modelling, Emission wavelengths, Waveguides, Thermal stability, Temperature metrology, Semiconductor lasers, Photoluminescence, Near infrared, Mathematical optimization, Laser damage threshold

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Proceedings Article | 10 August 2023 Presentation + Paper

Presentation + Paper

Compressed sensing approach for temporal and spectral photoluminescence imaging of semiconductors

Aidas Baltušis, George Koutsourakis, Sebastian Wood, James Blakesley, Stephen Sweeney

Proceedings Volume 12619, 1261904 (2023) https://doi.org/10.1117/12.2673794

KEYWORDS: Image restoration, Sampling rates, Photoluminescence, Compressed sensing, Simulations, Background noise, Time correlated single photon counting, Semiconductors, Reconstruction algorithms, Temporal resolution, Computational modeling

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Proceedings Article | 17 March 2023 Presentation

Presentation

Novel III-V materials and heterostructures for thermally stable near-IR lasers

Dominic Duffy, Igor Marko, Stephen Sweeney

Proceedings Volume PC12430, PC124300G (2023) https://doi.org/10.1117/12.2649895

KEYWORDS: Heterojunctions, Electronics, Temperature metrology, Semiconductors, Semiconductor lasers, Quantum wells, Mid-IR, Electrons, Active optics

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Proceedings Article | 10 March 2023 Presentation

Presentation

Optical wireless power transfer for terrestrial and space-based applications (Conference Presentation)

Igor Marko, Dominic Duffy, Ravi Misra, Keval Dattani, Stephen Sweeney

Proceedings Volume PC12416, PC1241608 (2023) https://doi.org/10.1117/12.2649879

KEYWORDS: Photovoltaics, Laser applications, Solar cells, Satellites, Wireless communications, Transmitters, Solar energy, Sensors, Safety, Laser sources

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Proceedings Article | 5 March 2021 Presentation

Presentation

Physical properties of low threshold current 1.25-μm type-II GaInAs/GaAsSb "W"-lasers

Dominic Duffy, Igor Marko, Timothy Eales, Christian Fuchs, Jannik Lehr, Wolfgang Stolz, Stephen Sweeney

Proceedings Volume 11705, 117050G (2021) https://doi.org/10.1117/12.2577808

KEYWORDS: Semiconductor lasers, Quantum wells, Pulsed laser operation, Optical testing, Laser damage threshold, Image segmentation, Heterojunctions, Gallium arsenide, Electrons, Data communications

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Proceedings Article | 13 March 2019 Presentation

Presentation

Thermal characteristics of 1.3um InAs-based quantum-dot lasers on silicon substrates (Conference Presentation)

Christopher Fitch, Igor Marko, Aidas Baltusis, Alf Adams, Daehwan Jung, Justin Norman, John Bowers, Stephen Sweeney

Proceedings Volume 10939, 109390Q (2019) https://doi.org/10.1117/12.2506861

KEYWORDS: Semiconductor lasers, Silicon, Quantum dot lasers, Modulation, Temperature metrology, Electrons, Doping

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Proceedings Article | 4 March 2019 Presentation

Presentation

BGa(As)P alloys for III-V integration on silicon (Conference Presentation)

Christopher Fitch, Peter Ludewig, Wolfgang Stolz, Stephen Sweeney

Proceedings Volume 10923, 1092316 (2019) https://doi.org/10.1117/12.2506106

KEYWORDS: Silicon, Boron, Semiconductor lasers, Laser development, Refractive index, Arsenic, Spectroscopic ellipsometry, Laser optics, Group III-V semiconductors, Binary data

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Proceedings Article | 28 April 2017 Presentation

Presentation

Pressure-dependent properties of type-II InAs/GaInSb mid-infrared interband cascade light-emitting devices (Conference Presentation)

Zoe Bushell, Igor Marko, Stephen Sweeney, Chul Soo Kim, Charles Merritt, William Bewley, Michael Warren, Chadwick Canedy, Igor Vurgaftman, Jerry Meyer, Mijin Kim

Proceedings Volume 10111, 101110L (2017) https://doi.org/10.1117/12.2252016

KEYWORDS: Modeling, Mid-IR, Light emitting diodes, Quantum cascade lasers, Laser damage threshold, Light sources, Spectroscopes, Biological and chemical sensing, Diagnostics, Optical resonators

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Proceedings Article | 28 April 2017 Presentation

Presentation

New experimental evidence for nature of the band gap of GeSn alloys (Conference Presentation)

Timothy Eales, Igor Marko, Seyed Ghetmiri, Wei Du, Yiyin Zhou, Shui-Qing Yu, Joe Margetis, John Tolle, Stefan Schulz, Edmond O’Halloran, Eoin O'Reilly, Stephen Sweeney

Proceedings Volume 10108, 101080F (2017) https://doi.org/10.1117/12.2252724

KEYWORDS: Current controlled current source, Tin, Electronics, Photonics, Germanium, Silicon photonics

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Proceedings Article | 20 April 2017 Presentation

Presentation

Optical gain in GaAsBi-based quantum-well diode lasers (Conference Presentation)

Igor Marko, Christopher Broderick, Shirong Jin, Peter Ludewig, Wolfgang Stolz, Kerstin Volz, Judy Rorison, Eoin O'Reilly, Stephen Sweeney

Proceedings Volume 10123, 1012303 (2017) https://doi.org/10.1117/12.2252053

KEYWORDS: Wafer-level optics, Laser applications, Quantum wells, Semiconductor lasers, Absorption, Bismuth, Laser development, Photons, Active optics, Laser systems engineering

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Proceedings Article | 31 August 2015 Paper

Paper

Selectively reflective transparent sheets

Rémi Waché, Marian Florescu, Stephen Sweeney, Steven Clowes

Proceedings Volume 9546, 954607 (2015) https://doi.org/10.1117/12.2188622

KEYWORDS: Reflectivity, Oxides, Reflection, Electromagnetic radiation, Optical lithography, Absorption, Visible radiation, Transmittance, Particles, Dielectrics

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Proceedings Article | 8 March 2014 Paper

Paper

Design and simulation of a semiconductor chip-based visible - NIR spectrometer for Earth observation

J. Coote, E. Woolliams, N. Fox, I. Goodyer, S. Sweeney

Proceedings Volume 8988, 898819 (2014) https://doi.org/10.1117/12.2040002

KEYWORDS: Waveguides, Resonators, Quantum wells, Spectroscopy, Cladding, Absorption, Semiconductors, Refractive index, Computer aided design, Semiconductor materials

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Proceedings Article | 20 November 2012 Paper

Paper

High performance silicon optical modulators

G. Reed, D. Thomson, F. Gardes, Y. Hu, N. Owens, K. Debnath, L. O’Faolain, T. Krauss, L. Lever, Z. Ikonic, R. Kelsall, M. Myronov, D. Leadley, I. Marko, S. Sweeney, D. Cox, A. Brimont, P. Sanchis, G.-H. Duan, A. Le Liepvre, C. Jany, M. Lamponi, D. Make, F. Lelarge, J. M. Fedeli, S. Messaoudene, S. Keyvaninia, G. Roelkens, D. Van Thourhout, S. Liu, X. Yang, P. Petropoulos

Proceedings Volume 8564, 85640H (2012) https://doi.org/10.1117/12.2001296

KEYWORDS: Modulators, Modulation, Silicon, Waveguides, Optical modulators, Phase shift keying, Photonic crystals, Eye, Resonators, Photonics

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Proceedings Article | 9 May 2012 Paper

Paper

High concentration measurement of mixed particle suspensions using simple multi-angle light scattering system

S. Buaprathoom, S. Pedley, A. D. Prins, S. Sweeney

Proceedings Volume 8439, 843923 (2012) https://doi.org/10.1117/12.922287

KEYWORDS: Particles, Light scattering, Statistical modeling, Calibration, Scattering, Signal detection, Data modeling, Latex, Multiple scattering, Semiconductor lasers

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Proceedings Article | 8 May 2012 Paper

Paper

Dual wavelength multiple-angle light scattering system for cryptosporidium detection

S. Buaprathoom, S. Pedley, S. Sweeney

Proceedings Volume 8427, 84272K (2012) https://doi.org/10.1117/12.921661

KEYWORDS: Light scattering, Scattering, Particles, Water, Refractive index, Data modeling, Calibration, Signal detection, Optical spheres, Laser scattering

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Proceedings Article | 2 February 2012 Paper

Paper

The development of a novel monolithic spectrometer chip concept

Stephen Sweeney, Yaping Zhang, Ian Goodyer

Proceedings Volume 8264, 82640O (2012) https://doi.org/10.1117/12.907118

KEYWORDS: Spectroscopy, Resonators, Waveguides, Quantum wells, Prototyping, Sensors, Manufacturing, Cladding, Spectrophotometry, Neodymium

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Proceedings Article | 14 May 2010 Paper

Paper

Reduction of dark current and unintentional background doping in InGaAsN photodetectors by ex situ annealing

Siew Li Tan, Lionel J. Tan, Yu Ling Goh, Shiyong Zhang, Jo Shien Ng, John P. David, Igor Marko, Jeremy Allam, Stephen Sweeney, Alfred Adams

Proceedings Volume 7726, 77261M (2010) https://doi.org/10.1117/12.853912

KEYWORDS: Semiconducting wafers, Annealing, Doping, Oxygen, Calcium, Gallium arsenide, Nitrogen, Photodetectors, Molecular beam epitaxy, Luminescence

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Proceedings Article | 12 February 2010 Paper

Paper

Improved performance of GaAsSb/GaAs SQW lasers

N. Hossain, S. R. Jin, S. Sweeney, S.-Q. Yu, S. Johnson, D. Ding, Y.-H. Zhang

Proceedings Volume 7616, 761608 (2010) https://doi.org/10.1117/12.842253

KEYWORDS: Gallium arsenide, Quantum wells, Vertical cavity surface emitting lasers, Temperature metrology, Semiconductor lasers, Internal quantum efficiency, Manufacturing, Semiconducting wafers, Measurement devices, Quantum efficiency

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Proceedings Article | 26 January 2009 Paper

Paper

The effect of hydrostatic pressure on the operation of quantum cascade lasers

Alfred Adams, Igor Marko, Stephen Sweeney, Roland Teissier, Alexei Baranov, Stanko Tomić

Proceedings Volume 7222, 722203 (2009) https://doi.org/10.1117/12.814322

KEYWORDS: Quantum cascade lasers, Scattering, Laser scattering, Phonons, Laser damage threshold, L band, Indium arsenide, Quantum wells, Mid-IR, Temperature metrology

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Proceedings Article | 29 August 2002 Paper

Paper

Characterization of 1.3-um wavelength GaInNAs/GaAs edge-emitting and vertical-cavity surface-emitting lasers using low temperature and high pressure

Alfred Adams, Robin Fehse, Stanko Tomic, Eoin O'Reilly, Aleksey Andreev, Gareth Knowles, Terry Sale, Stephen Sweeney, Gunther Steinle, A. Ramakrishnan, Henning Riechert

Proceedings Volume 4905, (2002) https://doi.org/10.1117/12.481002

KEYWORDS: Vertical cavity surface emitting lasers, Temperature metrology, Laser damage threshold, Quantum wells, Gallium arsenide, Nitrogen, Solids, Astatine, Optical fibers, Lasers

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Showing 5 of 20 publications

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