Dr. Nicolas Sanner Profile

Dr. Nicolas Sanner

at Aix-Marseille Univ - UMR CNRS 7341 - LP3

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 11 April 2024 Poster

Experimental investigation of nonlinear ionization of transparent dielectrics exposed to single-shot ultrashort laser excitation

Olivier Uteza, Thibault Genieys, Julia Ferrer-Ortas, Alok Pandey, Nicolas Sanner

Proceedings Volume PC12939, PC129391P (2024) https://doi.org/10.1117/12.3012759

KEYWORDS: Dielectrics, Ionization, Ultrafast phenomena, Laser ablation, Silica, Plasma, Optical properties, Micromachining, Femtosecond phenomena, Transform theory

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Non-linear ionization is the physical excitation mechanism by which an ultrashort laser locally transforms a dielectric from an initial insulating to a highly conductive state with considerable changes on its local electrical and optical properties. When controlled, this local excitation of the material yields well-calibrated macroscopic post-mortem transformation on which every optimized process of laser micromachining builds on. The work presented here is part of this perspective to get control of such laser-induced transformation, aiming to propose an accurate experimental evaluation of laser energy deposition at the surface of a dielectric material exposed to ultrashort pulses, and in particular of its produced free-electron – hole plasma density. For that objective, we conceive appropriate single-shot energy balance experiments with specifically designed dielectric targets consisting of wedged and plane-parallel samples of different thickness (below and above the Rayleigh of the focused laser) in order to observe the free-electron hole plasma produced at the dielectric front surface and also to act on the ratio between photo-ionization and total beam losses. Experiments consists in measuring the incident, reflected and transmitted energy on a wide range of incident fluence (<< Fth to ~ Fth, where Fth indicates the laser-induced ablation threshold) by means of calibrated and identical photodiodes in order to establish a precise energy balance of the interaction. We choose fused silica material because of its popularity for micromachining and photonics applications and we also use ultrashort femtosecond pulses ( 15 - 100 fs, 800 nm) to vary the photo-ionization rate and to well decorrelate ionization process from hydrodynamics and any energy transfer and recombination processes. The information retrieved from these experiments and further confronted to Drude-Lorentz theoretical framework helps us understanding ionization processes (photo-ionization, impact ionization) and their respective importance for dielectric macroscopic transformation in the ablation regime.

Proceedings Article | 17 March 2023 Presentation

Laser-fabrication of length-controlled sub-micrometer periodic structures in the bulk of fused silica

Srijoyee Datta, Raphaël Clady, Olivier Utéza, Nicolas Sanner

Proceedings Volume PC12408, PC1240808 (2023) https://doi.org/10.1117/12.2647555

KEYWORDS: Silica, Waveguides, Spatial resolution, Picosecond phenomena, Photonic integrated circuits, Photonic devices, Near infrared, Nanoimprint lithography, Nanofabrication, Lithography

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Proceedings Article | 17 March 2023 Presentation

Single-step laser-fabrication of arrays of deep holes of submicrometer diameter on dielectrics surface

Nicolas Sanner, Xin Liu, Srijoyee Datta, Raphaël Clady, Olivier Utéza

Proceedings Volume PC12410, PC1241002 (2023) https://doi.org/10.1117/12.2650176

KEYWORDS: Dielectrics, Nanofabrication, Laser processing, Laser ablation, Array processing, Silica, Physics, Optical components, Materials science, Laser beam propagation

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Proceedings Article | 1 April 2022 Presentation

Engraving depth-controlled nanohole arrays at the surface of glass by tailored laser beam processing

Nicolas Sanner, Xin Liu, Srijoyee Datta, Raphaël Clady, Olivier Utéza

Proceedings Volume PC11990, PC1199007 (2022) https://doi.org/10.1117/12.2614661

KEYWORDS: Glasses, Laser engraving, Laser ablation, Bessel beams, Silica, Photonic crystals, Nanostructuring, Nanolithography, Metamaterials, Laser processing

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Proceedings Article | 9 March 2020 Presentation

Role of wavelength on femtosecond laser ablation of dielectrics: From 258 nm to 2 µm (Conference Presentation)

Mario García Lechuga, Oliver Utéza, Nicolas Sanner, M. David Grojo

Proceedings Volume 11270, 112700D (2020) https://doi.org/10.1117/12.2545544

KEYWORDS: Femtosecond phenomena, Laser ablation, Dielectrics, Infrared radiation, Absorption, Ionization, Harmonic generation, Silica, Sapphire, Metrology

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Proceedings Article | 14 March 2016 Paper

Characterization of surface ablation of dielectrics irradiated by 12-fs laser pulse in air

C. Pasquier, M. Sentis, O. Utéza, N. Sanner

Proceedings Volume 9735, 97350H (2016) https://doi.org/10.1117/12.2208035

KEYWORDS: Silica, Laser ablation, Sapphire, Beam propagation method, Pulsed laser operation, Mirrors, Dielectrics, Ionization, Microscopes, Confocal microscopy

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Proceedings Article | 17 November 2014 Paper

Laser damage test-bench with ultrashort pulses down to 10 fs

O. Utéza, P. Blandin, R. Clady, C. Pasquier, N. Sanner, M. Sentis, Yu Li, Yan Long Shen

Proceedings Volume 9237, 923727 (2014) https://doi.org/10.1117/12.2068007

KEYWORDS: Laser induced damage, Laser ablation, Mirrors, Ultrafast phenomena, Laser damage threshold, Beam propagation method, Ionization, Pulsed laser operation, Optical testing, Laser applications

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Proceedings Article | 9 July 2013 Paper

Laser damage and ablation with femtosecond pulses: recent measurements and applications

Olivier Utéza, Raphaël Clady, Maxime Lebugle, Nicolas Sanner, Marc Sentis, Yu Li, Yan long Shen

Proceedings Volume 8786, 878607 (2013) https://doi.org/10.1117/12.2016831

KEYWORDS: Laser ablation, Laser induced damage, Ionization, Femtosecond phenomena, Laser applications, Laser-matter interactions, Pulsed laser operation, Mirrors, Neodymium, Laser development

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Proceedings Article | 7 May 2013 Paper

Laser induced damage of dielectrics down to few cycle pulse duration: test bench and measurements

O. Utéza, R. Clady, N. Sanner, M. Sentis

Proceedings Volume 8780, 87800H (2013) https://doi.org/10.1117/12.2016754

KEYWORDS: Laser induced damage, Femtosecond phenomena, Laser damage threshold, Laser ablation, Silica, Pulsed laser operation, Laser sources, Dielectrics, Ionization, Absorption

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Proceedings Article | 15 March 2013 Paper

On the wavelength dependence of femtosecond laser interactions inside band gap solids

S. Leyder, D. Grojo, Ph. Delaporte, M. Lebugle, W. Marine, N. Sanner, M. Sentis, O. Utéza

Proceedings Volume 8611, 861113 (2013) https://doi.org/10.1117/12.2003545

KEYWORDS: Silicon, Silica, Absorption, Femtosecond phenomena, Ionization, Solids, Semiconductors, Dielectrics, Pulsed laser operation, Photons

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Proceedings Article | 22 February 2011 Paper

Absorption of femtosecond laser pulse in fused silica: experiments and modelling

N. Varkentina, O. Uteza, N. Sanner, B. Chimier, M. Sentis, T. Itina

Proceedings Volume 7920, 792003 (2011) https://doi.org/10.1117/12.872736

KEYWORDS: Absorption, Dielectrics, Femtosecond phenomena, Laser energy, Laser ablation, Ionization, Modeling, Silica, Laser damage threshold, Pulsed laser operation

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Proceedings Article | 29 November 2010 Paper

Femtosecond laser damage and ablation of dielectrics: determinism, selectivity, and nanometric resolution

N. Sanner, O. Utéza, B. Chimier, A. Brocas, N. Varkentina, M. Sentis, P. Lassonde, F. Légaré, J. Kieffer

Proceedings Volume 7842, 78420W (2010) https://doi.org/10.1117/12.866738

KEYWORDS: Laser ablation, Femtosecond phenomena, Laser damage threshold, Ionization, Electrons, Laser induced damage, Dielectrics, Pulsed laser operation, Absorption, Plasma

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Proceedings Article | 31 December 2009 Paper

Laser induced damage of sapphire and titanium doped sapphire crystals under femtosecond to nanosecond laser irradiation

B. Bussière, O. Utéza, N. Sanner, M. Sentis, G. Riboulet, L. Vigroux, M. Commandré, F. Wagner, J.-Y. Natoli, J.-P. Chambaret

Proceedings Volume 7504, 75041N (2009) https://doi.org/10.1117/12.836191

KEYWORDS: Crystals, Sapphire, Laser induced damage, Laser crystals, Titanium, Cryogenics, Femtosecond phenomena, Antireflective coatings, Picosecond phenomena, Crystallography

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Proceedings Article | 12 May 2008 Paper

Ultra-short laser interaction with metals and optical multi-layer materials: transport phenomena and damage thresholds

Tatiana Itina, Olivier Utéza, Nicolas Sanner, Marc Sentis

Proceedings Volume 7005, 70050N (2008) https://doi.org/10.1117/12.782263

KEYWORDS: Metals, Dielectrics, Gold, Silver, Pulsed laser operation, Laser ablation, Ionization, Absorption, Laser damage threshold, Silica

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Proceedings Article | 20 February 2008 Paper

Influence of the beam-focus size on femtosecond laser-induced damage threshold in fused silica

N. Sanner, B. Bussiere, O. Utéza, A. Leray, T. Itina, M. Sentis, J. Natoli, M. Commandré

Proceedings Volume 6881, 68810W (2008) https://doi.org/10.1117/12.762767

KEYWORDS: Laser damage threshold, Silica, Femtosecond phenomena, Plasma, Laser induced damage, Reflectivity, Mirrors, Electrons, Statistical methods, Pulsed laser operation

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Proceedings Article | 29 September 2006 Paper

Programmable focal spot shaping of amplified femtosecond laser pulses and their application to micromachining

Nicolas Huot, Nicolas Sanner, Eric Audouard

Proceedings Volume 6400, 64000K (2006) https://doi.org/10.1117/12.689032

KEYWORDS: Femtosecond phenomena, Wavefronts, Beam shaping, Micromachining, Waveguides, Liquid crystals, Adaptive optics, Laser drilling, Phase modulation, Light valves

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Proceedings Article | 12 April 2005 Paper

Spatial beam shaping of femtosecond pulses with an optically addressed light valve

Nicolas Sanner, Nicolas Huot, Eric Audouard, Christian Larat, Jean-Pierre Huignard

Proceedings Volume 5708, (2005) https://doi.org/10.1117/12.590353

KEYWORDS: Wavefronts, Femtosecond phenomena, Beam shaping, Light valves, Photovoltaics, Liquid crystals, Micromachining, Phase modulation, Wavefront sensors, Oscillators

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Proceedings Article | 18 February 2004 Paper

Programmable femtosecond beam shaping applied to micromachining

Nicolas Sanner, Nicolas Huot, Eric Audouard, Christian Larat, Jerome Bourderionnet, Arnaud Brignon, Pierre Laporte, Jean-Pierre Huignard

Proceedings Volume 5249, (2004) https://doi.org/10.1117/12.515204

KEYWORDS: Femtosecond phenomena, Beam shaping, Micromachining, Wavefronts, Active optics, Control systems, Sensors, Light valves, Adaptive optics, Spatial resolution

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Proceedings Article | 18 November 2003 Paper

New methods to control quality and precision of micro-machining with femtosecond lasers

Ronan Le Harzic, Nicolas Sanner, Nicolas Huot, C. Donnet, Eric Audouard, Pierre Laporte

Proceedings Volume 5063, (2003) https://doi.org/10.1117/12.540515

KEYWORDS: Femtosecond phenomena, Micromachining, Laser ablation, Copper, Metals, Thermal effects, Aluminum, Polarization, Laser development, Laser applications

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Showing 5 of 19 publications

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