Renaud Bachelot

Université de Technologie de Troyes

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Pascal Royer

Université de Technologie de Troyes

168

Gilles Lérondel

Centre National de la Recherche Scientifique

127

Jérôme Plain

Université de Technologie de Troyes

122

Safi Jradi

Université de Technologie de Troyes

Pierre‐Michel Adam

Université de Technologie de Troyes

Gary P. Wiederrecht

Argonne National Laboratory

Olivier Soppera

Centre National de la Recherche Scientifique

Aurélien Bruyant

Université de Technologie de Troyes

Alexandre Bouhélier

Laboratoire Interdisciplinaire Carnot de Bourgogne

Christophe Couteau

Université de Technologie de Troyes

Cooperative Institutions

Centre National de la Recherche Scientifique

272

Université de Technologie de Troyes

123

Centre de Nanosciences et de Nanotechnologies

Commissariat à l'Énergie Atomique et aux Énergies Alternatives

Light, nanomaterials, nanotechnologies

Argonne National Laboratory

Université Grenoble Alpes

Shanghai University

Université de Bourgogne

Université Paris Cité

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Optical properties of metal nanoparticles as probed by photoemission electron microscopy

Journal of Applied Physics (2007)

Ludovic Douillard Fabrice Charra C. Fiorini Pierre‐Michel Adam Renaud Bachelot

Interaction of light with metallic nanostructures exhibit resonances specific to eigenmodes of collective electron motion known as plasmon modes. Both these resonances and effects of electromagnetic singularities lead to local field enhancement. Photoemission electron microscopy (PEEM) was recently used to image the electrons photoemitted from these local effects. Here we report on a full PEEM spectral study of localized surface plasmons excited on nanoparticles. In particular, we show strong spectral similarities between the PEEM signal and optical extinction as a function of the incident wavelength, establishing the photoemission microscopy as a valuable tool for investigating the optical properties of metal nanoparticles.

Photoemission electron microscopy

Inverse photoemission spectroscopy

Localized surface plasmon

10.1063/1.2719282

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Procédé de fabrication d'un réseau de microlentilles aux extrémités d'un faisceau de fibres optiques, fibres optiques et utilisation associées

HAL (Le Centre pour la Communication Scientifique Directe) (2010)

Jérôme Plain Renaud Bachelot Pascal Royer Xinhua Zeng Safi Jradi

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Apertureless near-field optical microscopy: A study of the local tip field enhancement using photosensitive azobenzene-containing films

Journal of Applied Physics (2003)

Renaud Bachelot F. H’Dhili Dominique Barchiesi Gilles Lérondel Radouane Fikri

The local optical field enhancement which can occur at the end of a nanometer-size metallic tip has given rise to both increasing interest and numerous theoretical works on near-field optical microscopy. In this article we report direct experimental observation of this effect and present an extensive study of the parameters involved. Our approach consists in making a “snapshot” of the spatial distribution of the optical intensity in the vicinity of the probe end using photosensitive azobenzene-containing films. This distribution is coded by optically induced surface topography which is characterized in situ by atomic force microscopy using the same probe. We perform an extensive analysis of the influence of several experimental parameters. The results are analyzed as a function of the illumination parameters (features of the incident laser beam, exposure time, illumination geometry) as well as the average tip-to-sample distance and tip geometry. The results obtained provide substantial information about the tip’s field. In particular, they unambiguously demonstrate both the nanometric spatial confinement of the tip field and the evanescent nature of the nanosource excited at the tip’s end. Most of the experimental results are illustrated by numerical calculations based on the finite element method and commented using the literature on the subject. Additionally, we discuss the origin of the optically induced topography on a nanometer scale and present some preliminary results of the apertureless near-field optical lithography based on local field enhancement. Our approach constitutes a useful tool to investigate the near-field of apertureless probes and should enable the optimization of the nanosource for any experiment requiring local optical excitation of the matter.

Near-field optics

Scanning Probe Microscopy

Local field

Azobenzene

Nanometrology

10.1063/1.1585117

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Citations (94)

Characterization of ion exchanged integrated lightwave devices with an apertureless scanning near-field optical microscope

HAL (Le Centre pour la Communication Scientifique Directe) (2003)

Sébastien Aubert Elise Ghibaudo Aurélien Bruyant Gilles Lérondel Renaud Bachelot

Characterization

Field ion microscope

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Infrared near-field nanoscopy study of all-semiconductor plasmonic gratings near plasma frequency

HAL (Le Centre pour la Communication Scientifique Directe) (2018)

Yi Huang Fabien D. Legrand Franziska Barho Derek Nowak Renaud Bachelot

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Apertureless scanning near-field optical microscopy: a comparison between homodyne and heterodyne approaches

Journal of the Optical Society of America B (2006)

Lewis M. Gomez Renaud Bachelot Alexandre Bouhélier Gary P. Wiederrecht Shih‐Hui Chang

In coherent homodyne apertureless scanning near-field optical microscopy (ASNOM) the background field cannot be fully suppressed because of the interference between the different collected fields, making the images difficult to interpret. We show that implementing the heterodyne version of ASNOM allows one to overcome this issue. We present a comparison between homodyne and heterodyne ASNOM through near-field analysis of gold nanowells, integrated waveguides, and a single evanescent wave generated by total internal reflection. The heterodyne approach allows for the control of the interferometric effect with the background light. In particular, the undesirable background is shown to be replaced by a controlled reference field. As a result, near-field information undetectable by a homodyne ASNOM is extracted by use of the heterodyne approach. Additionally, it is shown that field amplitude and field phase can be detected separately.

Heterodyne (poetry)

Direct-conversion receiver

Heterodyne detection

10.1364/josab.23.000823

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Citations (95)

Nano - imagerie vectorielle photochimique de plasmons de surface localisés

HAL (Le Centre pour la Communication Scientifique Directe) (2007)

Mathieu L. Juan Christophe Hubert Renaud Bachelot Jérôme Plain Gilles Lérondel

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