Dr. Andrew D. Johnson Profile

Dr. Andrew D. Johnson

at IQE plc

SPIE Involvement:

Author

Publications (7)

Proceedings Article | 13 March 2024 Presentation

Effect of Ge-substrate thickness on 940-nm VCSEL performance

Sara-Jayne Gillgrass, Craig Allford, Jack Baker, Andrew Johnson, Iwan Davies, Samuel Shutts, Peter Smowton

Proceedings Volume PC12904, PC1290408 (2024) https://doi.org/10.1117/12.3001658

KEYWORDS: Vertical cavity surface emitting lasers, Semiconducting wafers, Manufacturing, Reliability, Photovoltaics, Industry, High volume manufacturing, Gallium arsenide, Fabrication, Chip manufacturing

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Proceedings Article | 17 March 2023 Presentation

Long wavelength dilute nitride VCSELs, edge emitters and detectors for 3D sensing applications

Andrew Johnson, Kalyan Nunna, Andrew Clark, Andrew Joel, Rodney Pelzel

Proceedings Volume PC12439, PC124390A (2023) https://doi.org/10.1117/12.2668691

KEYWORDS: Emission wavelengths, Vertical cavity surface emitting lasers, Three dimensional sensing, Gallium arsenide, Alloys, Reliability, Quantum wells, Photodetectors, Organic light emitting diodes, Nitrogen

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Proceedings Article | 17 March 2023 Presentation

Engineering scalable in-plane semiconductor lasers for high volume manufacturing

Andrew Clark, Andrew Johnson, Matthew Geen, Mark Furlong, Rodney Pelzel

Proceedings Volume PC12440, PC1244008 (2023) https://doi.org/10.1117/12.2668434

KEYWORDS: Semiconductor lasers, Semiconducting wafers, High volume manufacturing, Engineering, Technology, Silicon, Epitaxy, Silicon photonics, Reproducibility, Quantum dots

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Proceedings Article | 17 March 2023 Presentation

Characterisation of 200 mm GaAs and Ge substrate VCSELs for high-volume manufacturing

Sara-Jayne Gillgrass, Craig Allford, Andrew Johnson, Jack Baker, Iwan Davies, Samuel Shutts, Peter Smowton

Proceedings Volume PC12439, PC124390B (2023) https://doi.org/10.1117/12.2648442

KEYWORDS: Vertical cavity surface emitting lasers, Semiconducting wafers, High volume manufacturing, Manufacturing, Gallium arsenide, Germanium, Three dimensional sensing, Reliability, Crystals

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Proceedings Article | 25 May 2022 Presentation

Impact of strain-induced bow on the performance of VCSELs on 150mm GaAs- and Ge-substrate wafers

Jack Baker, Sara Gillgrass, Tomas Peach, Craig Allford, J. Iwan Davies, Andrew Johnson, Andrew Joel, Sung Wook Lim, Samuel Shutts, Peter Smowton

Proceedings Volume PC12141, PC1214108 (2022) https://doi.org/10.1117/12.2624492

KEYWORDS: Semiconducting wafers, Vertical cavity surface emitting lasers, Gallium arsenide, Germanium, Oxides, Oxidation, Manufacturing, Surface finishing, Statistical analysis, Polishing

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Proceedings Article | 5 March 2021 Presentation

High performance 940nm VCSELs on large area germanium substrates: the ideal substrate for volume manufacture

Andrew Johnson, Andrew Joel, Andrew Clark, Dan Pearce, Matthew Geen, Wang Wang, Rodney Pelzel, Sung Wook Lim

Proceedings Volume 11704, 1170404 (2021) https://doi.org/10.1117/12.2583207

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Proceedings Article | 3 March 2020 Presentation + Paper

Design of photonic light-trapping structures for ultra-thin solar cells

Phoebe Pearce, Larkin Sayre, Andrew Johnson, Louise Hirst, Nicholas Ekins-Daukes

Proceedings Volume 11275, 112750T (2020) https://doi.org/10.1117/12.2550136

KEYWORDS: Gallium arsenide, Absorption, Silver, Diffraction gratings, External quantum efficiency, Diffraction, Reflection, Solar cells, Measurement devices, Waveguides

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Showing 5 of 7 publications

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