Prof. Gilles Lérondel Profile

Prof. Gilles Lérondel

Professor/Researcher at Univ de Technologie Troyes

SPIE Involvement:

Conference Chair | Editor | Author

Publications (28)

SPIE Conference Volume | October 19, 2017

Nanophotonic Materials XIV

SPIE Conference Volume | September 18, 2017

UV and Higher Energy Photonics: From Materials to Applications 2017

PROCEEDINGS ARTICLE | September 18, 2017

Integrated freestanding two-dimensional transition metal dichalcogenides (Conference Presentation)

Proc. SPIE. 10344, Nanophotonic Materials XIV

Read Abstract

SPIE Conference Volume | December 15, 2016

Nanophotonic Materials XIII

SPIE Conference Volume | December 1, 2016

UV and Higher Energy Photonics: From Materials to Applications

PROCEEDINGS ARTICLE | November 3, 2016

ZnO top-down structuring for UV photonic applications (Conference Presentation)

Proc. SPIE. 9926, UV and Higher Energy Photonics: From Materials to Applications

KEYWORDS: Electron beam lithography, Holography, Ultraviolet radiation, Nickel, Gallium nitride, Excitons, Indium gallium nitride, Reactive ion etching, Zinc oxide, Group II-VI semiconductors

Read Abstract

SPIE Conference Volume | October 15, 2015

Nanophotonic Materials XII

PROCEEDINGS ARTICLE | October 5, 2015

Enhanced luminescence excitation via efficient optical energy transfer (Presentation Recording)

Proc. SPIE. 9545, Nanophotonic Materials XII

KEYWORDS: Nanostructuring, Waveguides, Polymers, Luminescence, Energy transfer, Quantum dots, Light sources and illumination, Internal quantum efficiency, Polymer thin films, Absorption

Read Abstract

Luminescent nanoscale materials (LNMs) have received widespread interest in sensing and lighting applications due to their enhanced emissive properties. For sensing applications, LNMs offer improved sensitivity and fast response time which allow for lower limits of detection. Meanwhile, for lighting applications, LNMs, such as quantum dots, offer an improved internal quantum efficiency and controlled color rendering which allow for better lighting performances. Nevertheless, due to their nanometric dimensions, nanoscale materials suffer from extremely weak luminescence excitation (i.e. optical absorption) limiting their luminescence intensity, which in turn results in a downgrade in the limits of detection and external quantum efficiencies. Therefore, enhancing the luminescence excitation is a major issue for sensing and lighting applications. In this work, we report on a novel photonic approach to increase the luminescence excitation of nanoscale materials. Efficient luminescence excitation increase is achieved via a gain-assisted waveguided energy transfer (G-WET). The G-WET concept consists on placing nanoscale materials atop of a waveguiding active (i.e. luminescent) layer with optical gain. Efficient energy transfer is thus achieved by exciting the nanoscale material via the tail of the waveguided mode of the active layer emission. The G-WET concept is demonstrated on both a nanothin layer of fluorescent sensitive polymer and on CdSe/ZnS quantum dots coated on ZnO thin film, experimentally proving up to an 8-fold increase in the fluorescence of the polymer and a 3-fold increase in the luminescence of the CdSe/ZnS depending of the active layer emission regime (stimulated vs spontaneous emission). Furthermore, we will discuss on the extended G-WET concept which consists on coating nanoscale materials on a nanostructured active layer. The nanostructured active layer offers the necessary photonic modulation and a high specific surface which can presumably lead to a more efficient G-WET concept. Finally, the efficiency as well as the observation conditions of the GWET will be discussed and compared with more conventional charge transfer or dipole-dipole energy transfer.

PROCEEDINGS ARTICLE | October 5, 2015

Highly efficient excitonic emission of CBD grown ZnO micropods (Presentation Recording)

Proc. SPIE. 9545, Nanophotonic Materials XII

KEYWORDS: Thin films, Nanostructures, Solar cells, Crystals, Diodes, Phonons, Excitons, Zinc oxide, Internal quantum efficiency, Chemical fiber sensors

Read Abstract

SPIE Conference Volume | October 8, 2014

Nanophotonic Materials XI

SPIE Conference Volume | September 24, 2013

Nanophotonic Materials X

PROCEEDINGS ARTICLE | September 11, 2013

Optical near field imaging of localized surface plasmons modes in metallic nanostructures integrated on dielectric waveguides

Proc. SPIE. 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI

KEYWORDS: Nanostructures, Surface plasmons, Waveguides, Silicon, Near field scanning optical microscopy, Wave propagation, Geometrical optics, Radio propagation, Near field optics, Nanowires

Read Abstract

PROCEEDINGS ARTICLE | September 11, 2013

Strategies for self-organization of Au nanoparticles assisted by copolymer templates

Proc. SPIE. 8809, Plasmonics: Metallic Nanostructures and Their Optical Properties XI

KEYWORDS: Gold, Thin films, Refractive index, Polymethylmethacrylate, Sensors, Nanoparticles, Etching, Annealing, Picosecond phenomena, Reactive ion etching

Read Abstract

PROCEEDINGS ARTICLE | March 6, 2013

Metal-dielectric metamaterials for guided wave optics applications

Proc. SPIE. 8627, Integrated Optics: Devices, Materials, and Technologies XVII

KEYWORDS: Metamaterials, Waveguides, Dielectrics, Interfaces, Silicon, Near field scanning optical microscopy, Light wave propagation, Dielectric polarization, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | May 16, 2012

Light propagation in metallic nanoparticle chains on SOI waveguide

Proc. SPIE. 8431, Silicon Photonics and Photonic Integrated Circuits III

KEYWORDS: Plasmonics, Finite-difference time-domain method, Waveguides, Nanoparticles, Particles, Silicon, Near field, Geometrical optics, Light wave propagation, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | January 17, 2011

Light confinement and propagation characteristics in plasmonic gap waveguides on silicon

Proc. SPIE. 7943, Silicon Photonics VI

KEYWORDS: Plasmonics, Waveguides, Copper, Silicon, Atomic force microscopy, Near field scanning optical microscopy, Near field, Wave propagation, Light wave propagation, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | January 17, 2011

Optical near field in silicon photonics

Proc. SPIE. 7943, Silicon Photonics VI

KEYWORDS: Waveguides, Silicon, Near field scanning optical microscopy, Near field, Wave propagation, Brain-machine interfaces, Silicon photonics, Light wave propagation, Multimode interference devices, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | January 17, 2011

Far field scattering by a waveguide-coupled nanowire

Proc. SPIE. 7941, Integrated Optics: Devices, Materials, and Technologies XV

KEYWORDS: Gold, Nanoantennas, Waveguides, Polarization, Scattering, Glasses, Light scattering, Chromium, Wave propagation, Nanowires

Read Abstract

PROCEEDINGS ARTICLE | May 14, 2010

Millimeter scale topographical image of highly integrated optical structures using enlarged metrological atomic-force microscopy

Proc. SPIE. 7718, Optical Micro- and Nanometrology III

KEYWORDS: Actuators, Microscopes, Mirrors, Ferroelectric materials, Metrology, Waveguides, Interferometers, Atomic force microscopy, Near field scanning optical microscopy, Integrated optics

Read Abstract

PROCEEDINGS ARTICLE | March 7, 2008

Optical field probing in photonic structures by atomic force microscopy combined with optical heterodyne detection

Proc. SPIE. 6896, Integrated Optics: Devices, Materials, and Technologies XII

KEYWORDS: Waveguides, Dispersion, Silicon, Atomic force microscopy, Near field scanning optical microscopy, Wave propagation, Heterodyning, Integrated optics, Brain-machine interfaces, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | February 12, 2008

A compact SWIFTS spectrograph with a leaky loop structure

Proc. SPIE. 6896, Integrated Optics: Devices, Materials, and Technologies XII

KEYWORDS: Photodetectors, Refractive index, Spectrographs, Waveguides, Silver, Fourier transforms, Planar waveguides, Signal detection, Electromagnetism, Radio propagation

Read Abstract

PROCEEDINGS ARTICLE | September 15, 2006

Optical full-field measurement of strain at a microscopic scale with the grid method

Proc. SPIE. 6341, Speckle06: Speckles, From Grains to Flowers

KEYWORDS: Optical microscopes, Mirrors, Phase shifting, Optical lithography, Image processing, Interferometry, Optical testing, Photoresist materials, Spatial resolution, Current controlled current source

Read Abstract

PROCEEDINGS ARTICLE | August 30, 2006

Surface plasmon-like behavior of two-photon induced photoluminescence of gold nanorods

Proc. SPIE. 6323, Plasmonics: Metallic Nanostructures and their Optical Properties IV

KEYWORDS: Gold, Confocal microscopy, Plasmons, Surface plasmons, Polarization, Nanoparticles, Particles, Luminescence, Anisotropy, Nanorods

Read Abstract

PROCEEDINGS ARTICLE | April 21, 2006

Experimental characteristics and analysis of transverse modes in 1.3-µm strained InGaAs quantum well VCSELs

Proc. SPIE. 6185, Micro-Optics, VCSELs, and Photonic Interconnects II: Fabrication, Packaging, and Integration

KEYWORDS: Oxides, Optical fibers, Indium gallium arsenide, Quantum wells, Continuous wave operation, Gallium arsenide, Near field scanning optical microscopy, Vertical cavity surface emitting lasers, Semiconducting wafers, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | August 27, 2005

High accuracy optoelectronic control system for near field characterization of millimeter long wave guiding structures

Proc. SPIE. 5858, Nano- and Micro-Metrology

KEYWORDS: Actuators, Mirrors, Interferometers, Control systems, Optoelectronics, Near field, Heterodyning, Electronic circuits, Phase shifts, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | September 15, 2004

Mapping of localized surface plasmon fields via exposure of a photosensitive polymer

Proc. SPIE. 5450, Photonic Crystal Materials and Nanostructures

KEYWORDS: Gold, Refractive index, Surface plasmons, Polarization, Polymers, Particles, Silver, Atomic force microscopy, Electromagnetism, Near field optics

Read Abstract

PROCEEDINGS ARTICLE | July 1, 2004

Light emission from 1D silicon photonic crystals containing erbium

Proc. SPIE. 5357, Optoelectronic Integration on Silicon

KEYWORDS: Luminescence, Crystals, Silicon, Reflectivity, Photonic crystals, Doping, Ion implantation, Erbium, Optical microcavities, Temperature metrology

Read Abstract

PROCEEDINGS ARTICLE | March 25, 2004

Porous silicon: a versatile optical material

Proc. SPIE. 5277, Photonics: Design, Technology, and Packaging

KEYWORDS: Reflectors, Refractive index, Mirrors, Output couplers, Etching, Silicon, Reflectivity, Photonic crystals, Sapphire lasers, Optical microcavities

Read Abstract