Dr. Roelene Botha Profile

Dr. Roelene Botha

Division Manager Optical Coatings at RhySearch

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Author

Publications (8)

Proceedings Article | 12 October 2021 Poster

Investigation of particle densities of ultrasonic cleaned substrates using laser damage testing methods

Thomas Gischkat, Daniel Schachtler, Zoltan Balogh-Michels, Roelene Botha, André Mocker, Marco Cucinelli, Bernd Eiermann, Sven Günther, Tamara Meinl, Igor Stevanovic, Marcus Denk, Philipp Alder, Michael Berger

Proceedings Volume 11910, 119101R (2021) https://doi.org/10.1117/12.2600632

KEYWORDS: Particles, Laser induced damage, Ultrasonics, Testing and analysis, Inspection, Coating, Silica, Optical components, Optical coatings, Laser damage threshold

Proceedings Article | 1 April 2020 Presentation + Paper

UV absorption mapping as subsurface damage inspection in transparent optical materials

H. Cattaneo, R. Botha, C. Ziolek

Proceedings Volume 11352, 1135205 (2020) https://doi.org/10.1117/12.2555715

KEYWORDS: Absorption, Ultraviolet radiation, Contamination, Optical inspection, Damage detection, Photothermal effect

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Proceedings Article | 20 November 2019 Presentation + Paper

Influence of ultra-sonic frequency during substrate cleaning on the laser resistance of antireflection coatings

Thomas Gischkat, Daniel Schachtler, Zoltan Balogh-Michels, Roelene Botha, André Mocker, Bernd Eiermann, Sven Günther

Proceedings Volume 11173, 1117317 (2019) https://doi.org/10.1117/12.2536442

KEYWORDS: Particles, Laser induced damage, Resistance, Antireflective coatings, Coating, Silica, Silver, Inspection, Laser processing, Optical coatings

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Proceedings Article | 16 November 2018 Paper

Laser-induced damage threshold of nanoporous single-layer ALD antireflective coatings

Thomas Gischkat, Roelene Botha, Igor Stevanovic, Adriana Szeghalmi, Lilit Ghazaryan, Andreas Bächli

Proceedings Volume 10805, 108051V (2018) https://doi.org/10.1117/12.2500927

KEYWORDS: Atomic layer deposition, Coating, Laser induced damage, Antireflective coatings, Nitrogen, Laser damage threshold, Silica, Laser irradiation, Refractive index, Wet etching

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Proceedings Article | 5 June 2018 Paper

Influence of substrate cleaning on the laser resistance of antireflective coatings

Thomas Gischkat, Roelene Botha, Igor Stevanovic, Marco Cucinelli, Sven Günther, Andreas Bächli

Proceedings Volume 10691, 106911W (2018) https://doi.org/10.1117/12.2313429

KEYWORDS: Laser induced damage, Particles, Polishing, Antireflective coatings, Coating, Surface finishing

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Proceedings Article | 13 November 2017 Paper

Influence of temperature and environment on the laser damage threshold of ion-beam sputtered anti-reflective coatings at 355 nm wavelength

Roelene Botha, Thomas Gischkat, Igor Stevanovic, Andreas Bächli, David Bischof, Markus Michler, Stefan Rinner, Carsten Ziolek

Proceedings Volume 10447, 104472B (2017) https://doi.org/10.1117/12.2281176

KEYWORDS: Coating, Laser damage threshold, Ion beams, Antireflective coatings, Humidity, Laser induced damage

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Proceedings Article | 6 December 2016 Paper

Investigation of the ageing effects exhibited by AR coatings exposed to ultraviolet laser irradiation

Roelene Botha, David Bischof, Bernhard Vetsch, Ueli Scherrer, Markus Michler, Stefan Rinner, Andreas Ettemeyer, Carsten Ziolek

Proceedings Volume 10014, 100141L (2016) https://doi.org/10.1117/12.2244657

KEYWORDS: Antireflective coatings, Laser induced damage, Optical coatings, Ultraviolet radiation, Optical testing, Optical components, Laser damage threshold, Silica, Laser irradiation, Temperature metrology

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Proceedings Article | 23 November 2015 Paper

Comparative study of the laser damage threshold and optical characteristics of Ta2O5-SiO2 multilayers deposited using various methods

Roelene Botha, Silvia Schwyn Thöny, Martin Grössl, Safer Mourad, Clau Maissen, Jacobus Venter, Thomas Südmeyer, Martin Hoffmann, Pavel Bulkin, Sabine Linz-Dittrich, David Bischof, Markus Michler, Stefan Rinner, Andreas Ettemeyer

Proceedings Volume 9632, 963203 (2015) https://doi.org/10.1117/12.2194084

KEYWORDS: Manufacturing, Optical coatings, Polishing, Laser induced damage, Laser damage threshold, Silica, Multilayers, Optics manufacturing, Ion beams, Sputter deposition

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Showing 5 of 8 publications

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