Xavier LETARTRE                                Version française               

Directeur de recherche C.N.R.S

INL
Site Ecole Centrale de Lyon
Batiment F7
36, Avenue Guy de Collongue
69134 Ecully
France

Tel : (33).04 72 18 60 81

E-mail : xavier.letartre@ec-lyon.fr

Localisation : F7 1er étage


Research activities

HDR

Department : Photonique / Photovoltaïque

Group : Nanophotonique

Activities :


C.V.


Publications (last 5 years)

Articles Conférences invitées Communications
 

Articles (11)

Engineering of slow Bloch modes for optical trapping
L. Milord, E. Gerelli, C. Jamois, A. Harouri, C. Chevalier, P. Viktorovitch, X. Letartre, T. Benyattou, , , , , , , , , , , ,
Applied Physics Letters 106 121110 2015 AbstractIn the present paper, we propose an approach based on slow Bloch mode microcavity that enables the optical trapping of small nanoparticles over a broad surface. A specific design based on a double-period photonic crystal is presented. It enables an easy coupling using a wide free-space Gaussian beam and the cavity Q factor can be tuned at will. Moreover, the microcavity mode is mainly localized within the photonic crystal holes, meaning that each hole of the microcavity behaves as efficient nanotweezers. Experimental studies have shown that 200 nm and 100 nm particles can be trapped within the microcavity, in a spatial region that corresponds to the size of one hole (200 nm wide). The experimental trap stiffness has been extracted. It shows that this approach is among the most performant ones if we take into account the size of the cavity.       
Optical polarization properties of InAs/InP quantum dot and quantum rod nanowires
R. Anufriev, J. Barakat, G. Patriarche, X. Letartre, C. Bru-Chevallier, J.C. Harmand, M. Gendry, N. Chauvin
Nanotechnology 26 395701 2015       Full pdf (Restricted access)
Nanoantenna-induced fringe splitting of Fabry-Perot interferometer: a model study of plasmonic/photonic coupling
H. Liu, M. Erouel, E. Gerelli, A. Harouri, T. Benyattou, R. Orobtchouk, L. Milord, A. Belarouci, X. Letartre, C. Jamois, , , , , , , , , ,
Optics Express 23 31085 2015       
Tuneable dual-mode micro-resonator associating photonic crystal membrane and Fabry-Pérot cavity
K. Kusiaku, J.L. Leclercq, P. Viktorovitch, X. Letartre
IEEE Photonics Journal Vol 6, N°2 4700209 2014       
Perturbation approach for the control of the quality factor in photonic crystal membranes: Application to selective absorbers
C. Blanchard, P. Viktorovitch, X. Letartre
Physical Review A: Atomic, Molecular and Optical Physics 90 033824 2014       
Inhibition of light emission in a 2.5 D photonic structure
R. Peretti, C. Seassal, X. Letartre, X. Letartre
Journal of Applied Physics 116 023107 2014       
Huge light-enhancement by coupling a bowtie nano-antenna’s plasmonic resonance to a photonic crystal mode
A. El Eter, T. Grosjean, P. Viktorovitch, X. Letartre, T. Benyattou, F. Baida
Optics Express 22 14464 2014       
Optical mode study of III–V-nanowire-based nanophotonic crystals for an integrated infrared band microlaser
Z. Lin, M. Gendry, X. Letartre
Photonics Research 2, Issue 6 pp. 182-185 (2014) 2014       
Optical mode study of III–V-nanowire-based nanophotonic crystals for an integrated infrared band microlaser
Z. Lin, M. Gendry, X. Letartre
Photonics Research 2(6) 182 2014       
Differential ultrafast all-optical switching of the resonances of a micropillar cavity
C. Blanchard, P. Viktorovitch, X. Letartre
Applied Physics Letters 105 2014 AbstractWe perform frequency-and time-resolved all-optical switching of a GaAs-AlAs micropillar cavity using an ultrafast pump-probe setup. The switching is achieved by two-photon excitation of free carriers. We track the cavity resonances in time with a high frequency resolution. The pillar modes exhibit simultaneous frequency shifts, albeit with markedly different maximum switching amplitudes and relaxation dynamics. These differences stem from the non-uniformity of the free carrier density in the micropillar, and are well understood by taking into account the spatial distribution of injected free carriers, their spatial diffusion and surface recombination at micropillar sidewalls. (C) 2014 AIP Publishing LLC.       
Effect of SAM chain length and binding functions on protein adsorption: beta-Lactoglobulin and apo-transferrin on gold
K. Kusiaku, J.L. Leclercq, P. Viktorovitch, X. Letartre
Collection Symposium Series on Chemistry of Nucleic Acid Components 116 2014 AbstractControlled immobilization of proteins is crucial in many applications, including biosensors. Allergen biosensing, for example, requires molecular recognition of suitably immobilized proteins by specific antibodies and sensitive measurement of this interaction. Self-assembled monolayers (SAMs), terminated by active functions, and are of great interest for the immobilization of biomolecules. The efficiency of further biorecognition involving molecules immobilized on these surfaces demonstrates an interesting dependence on the chain length and terminal function of the SAM. This motivated us to investigate adsorption of two proteins both known as milk allergens-beta-lactoglobulin and apo-transferrin-on amine-terminated SAMs. We varied the chain length by using either short or long chain amine-terminated thiols (cysteamine, CEA, and 11-mercaptoundecylamine, MUAM). We also investigated the influence of the addition of a rigid cross-linker, p-phenylene diisothiocyanate (PDITC), to these amine layers prior to protein adsorption. Protein binding was studied using polarization modulation-infrared reflection absorption spectroscopy (PM-IRRAS) and atomic force microscopy (AFM) to characterize their amount and dispersion. We found that protein immobilization varies with SAM chain length and is also influenced by the presence of a cross-linker. The presence of a rigid cross-linker favours the binding of proteins on long chain SAMs, while the effect is almost nonexistent on shorter chains. In addition, the presence of the cross-linker induces a better dispersion of the proteins on the surfaces, regardless of the length of the thiols forming the SAMs. The effects of chain length and chemistry of protein binding are discussed. (C) 2014 Published by Elsevier B.V.       

Conférences invitées (16)

Hybrid Bloch modes for controlling the spatio-temporal properties of photons
T. Deschamps, F. Dubois, H. Nguyen, P. Viktorovitch, J.L. Leclercq, C. Seassal, X. Letartre, , , , , , , , , , , , ,
2nd International Conference on Physics of 2D Crystals, ICP2C2 2017 Ha Long, Vietnam April 25-30, 2017       
High index dielectric optical meta-surfaces with broken vertical symmetry
F. Dubois, T. Deschamps, H. Nguyen, X. Letartre, J.L. Leclercq, C. Seassal, P. Viktorovitch, , , , , , , , , , , , ,
High Contrast Metastructures VI, Photonics West San Francisco, USA 27 January - 1 February, 2017       
Vers la réalisation de composants optiques nonlinéaires intégrés sur puce exploitant du graphène
A. Pavlova, M. Kemiche, J. Lhuillier, T. Wood, R. Mazurczyk, P. Regreny, P. Rojo Romeo, B. Vilquin, C. Grillet, S. Callard, X. Letartre, C. Monat, , , , , , , ,
colloque SFO-PAMO, 24ème Congrès Général de la SFP  Orsay, France 3-7 juillet 2017       
Widened photonic functionality of asymmetric high-index contrast/photonic crystal gratings
H. Nguyen, X. Letartre, J.L. Leclercq, C. Seassal, P. Viktorovitch, , , , , , , , , , , , , , ,
Photonics West 2016 San-Francisco, USA 13-18 February 2016       
Dispersion engineering of exciton polariton in double period photonic crystal
H. Nguyen, F. Dubois, X. Letartre, J.L. Leclercq, C. Seassal, P. Viktorovitch, , , , , , , , , , , , , ,
17th PLMCN Nara (Japan) March 28-31, 2016       
High index dielectric optical “meta-surfaces” with broken vertical symmetry
H. Nguyen, F. Dubois, T. Deschamps, X. Letartre, J.L. Leclercq, C. Seassal, P. Viktorovitch, , , , , , , , , , , , ,
OSA Subwavelength Photonics Incubator washington USA 21-23 September 2016       
Caractéristiques de dispersion à la demande dans les structures diffractives tout diélectriques à fort contraste d’indice et à symétrie transverse brisée
H. Nguyen, F. Dubois, T. Deschamps, X. Letartre, J.L. Leclercq, C. Seassal, P. Viktorovitch, , , , , , , , , , , , ,
« Nouveaux systèmes périodiques / Instrumentation diffractive» Journées du CCT-CNES et du GT2 – GDR Ondes  Toulouse 29 et 30 novembre       
Mid-IR integrated photonics for sensing applications
L. Carletti, C. Monat, R. Orobtchouk, P. Rojo Romeo, Z. Lin, C. Jamois, J.L. Leclercq, P. Viktorovitch, X. Letartre, C. Grillet, , , , , , , , , ,
Photonics west 2015, Quantum Sensing and Nanophotonic Devices  San Francisco, USA 8 février 2015 AbstractThe mid-infrared (mid-IR, wavelength range between 2 and 10 μm) is of great interest for a huge range of applications such as medical and environment sensors, security, defense and astronomy. I will give a broad overview of the different activities recently launched in INL Lyon, in close collaboration with several French and Australian institutions, under the umbrella of “Mid-IR integrated photonics” with a particular focus on novel integrated sources for the Mid-IR including hybrid III-V semiconductors on SiGe sources, thermal sources and nonlinear sources. © (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.        
Directional and Selective Mid-Infrared Thermal Emitters for Sensing Applications
C. Blanchard, Q. Levesque, D. Costantini, C. Jamois, J.L. Leclercq, A. Coutrot, F. Marquier, L. Milord, C. Grillet, H. Benisty, P. Viktorovitch, X. Letartre, J. Greffet, , , , , , ,
Optical Sensors 2015 Boston (USA) 27 June–1 July 2015       
High-Contrast Gratings for Long-Wavelength Laser Integration on Silicon
C. Sciancalepore, A. Descos, D. Bordel, H. Duprez, X. Letartre, S. Menezo, B. Ben Bakir
Photonics West 2014 San Francisco - California - United States 1 - 6 February 2014       
Confinement of photons and control of their emission using surface addressable photonic crystal membrane
X. Letartre, R. Peretti, C. Blanchard, C. Sciancalepore
Photonics West 2014 San Francisco - California - United States 1 - 6 February 2014       
High-index contrast/photonic crystal gratings: a wealth of new photonic functionality
P. Viktorovitch, X. Letartre, B. Ben Bakir, S. Menezo
Photonics West 2014 San Francisco - California - United States 1 - 6 February 2014       
Photonic crystal membrane resonators: A wealth of new photonic functionality
P. Viktorovitch, X. Letartre, B. Ben Bakir, S. Menezo
International Conference on Transparent Optical Networks (ICTON) Graz (Austria) 6-10 july 2014       
Photonic crystal mirrors: a cornucopia of nanopatterned structures for the taming of light at the wavelength scale
R. Artinyan, C. Belacel, Z. Lin, J.L. Leclercq, S. Callard, X. Letartre
Advanced Laser Technologies International Conference (ALT) Cassis (France) 6-10 october 2014       
Silicon CMOS Compatible Transition Metal Dioxide Technology for Boosting Highly Integrated Photonic Devices with Disruptive Performance
P. Sanchis, L. Sanchez, P. Castera, A. Rosa, A. Gutierrez, A. Brimont, G. Saint-Girons, R. Orobtchouk, S. Cueff, P. Rojo Romeo, R. Bachelet, P. Regreny, B. Vilquin, C. Dubourdieu, X. Letartre, E. Grenier, J. Penuelas, X. Hu, S. Abel, J. Fompeyrine
16th International Conference on Transparent Optical Networks (ICTON) Graz, Austria July 06-10, 2014 AbstractIn this work we will present the objectives and last results of the FP7-ICT-2013-11-619456 SITOGA project. The SITOGA project will address the integration of transition metal dioxides (TMO) materials in silicon photonics and CMOS electronics. TMOs have unique electro-optical properties that will offer unprecedented and novel capabilities to the silicon platform. SITOGA will focus on two disruptive TMO materials, barium titanate (BaTiO3) and vanadium didioxide (VO2), for developing advanced photonic integrated devices for a wide range of applications. Innovative integration processes with silicon photonics circuits and CMOS electronics will be developed. The whole technology chain will be validated by two functional demonstrators: a 40 Gbit/s DPSK transceiver and an 8x8 switching matrix with 100 Gbit/s throughput.       
Heterostructures combining functional oxides and semiconductors for integrated photonics
G. Saint-Girons, S. Cueff, B. Meunier, X. Hu, L. Louahadj, L. Mazet, R. Orobtchouk, P. Rojo Romeo, R. Bachelet, B. Vilquin, P. Regreny, N. Chauvin, G. Grenet, J. Penuelas, A. Danescu, C. Dubourdieu, X. Letartre, G. Renaud, V. Favre-Nicolin, G. Saint-Girons
Workshop “Les oxydes pour l’optique et la photonique” Meudon (France) 8-9 décembre 2014       

Communications (14)


Addressing nanoantennas with slow Bloch mode cavity: application to optical trapping
L. Milord, C. Jamois, X. Letartre, P. Viktorovitch, A. El Eter, T. Grosjean, F. Baida, T. Benyattou, , , , , , , , , , , ,
High Contrast Metastructures VI, Photonics West San Francisco, USA 27 January - 1 February, 2017       
Tight control of light trapping in surface addressable photonic crystal membranes: application to spectrally and spatially selective optical devices
X. Letartre, C. Blanchard, C. Grillet, C. Jamois, J.L. Leclercq, P. Viktorovitch, , , , , , , , , , , , , ,
Conference on Photonic Crystal Materials and Devices XII, Photonics Europe Brussels, Belgium april 5-7, 2016       
Perturbation model for the control of the spectral properties of high contrast gratings
C. Blanchard, C. Jamois, P. Viktorovitch, C. Grillet, J.L. Leclercq, T. Benyattou, X. Letartre, , , , , , , , , , , , ,
SPIE Photonics West 2015 San Francisco (USA) february 2015       
Self-assembly “micro-origami” photon cages as hollow micro-resonators
A. Danescu, C. Chevalier, R. Artinyan, P. Regreny, G. Grenet, S. Callard, P. Rojo Romeo, X. Letartre, J.L. Leclercq
SPIE Microtechnologies Barcelona, Spain 4-6 mai 2015 AbstractSelective etching of pre-stressed multi-layered structures releases intrinsic stresses creating flexible macroscopic shapes (rolls, spirals, tubes…). Combining mechanical and photonic concepts, we develop an experimental approach by controlling material composition, mask design and etching process in order to obtain prescribed macroscopic 3D hollow optical micro-cavities. New photonic microstructures are proposed for an efficient light trapping in low index media. Cylindrical hollow cavities formed by bending a photonic crystal membrane are designed. Using numerical simulations, strong confinement of photons is demonstrated for very open resonators. The resulting strong light matter interaction can be exploited in optical devices comprising an active material embedded in a low index matrix like polymer or even gaz.       
Multilevel Modeling Methodology For Reconfigurable Computing Systems Based On Silicon Photonics
Z. Li, S. Le Beux, C. Monat, X. Letartre, I. O Connor, , , , , , , , , , , , , , ,
2015 IEEE Computer Society Annual Symposium on VLSI (ISVLSI) Montpellier (France) 8-10 juillet       
mid-infrared integrated photonics on a SiGe platform
L. Carletti, C. Blanchard, D. Allioux, C. Monat, R. Orobtchouk, P. Rojo Romeo, Z. Lin, C. Jamois, J. Leclercq, P. Viktorovitch, X. Letartre, C. Grillet, P. Ma, Y. Yu, B. Luther-Davies, D. Hudson, S. Madden, M. Brun, S. Ortiz, P. Labeye
Opto Electronics Communications Conference (OECC),  Shanghai, PEOPLES R CHINA,  JUN 28-JUL 02, 2015 AbstractThe mid-infrared is of great interest for a huge range of applications such as medical and environment sensors, security, defense and astronomy. I will give a broad overview of the different activities recently launched in INL Lyon, in close collaboration with several French and Australian institutions, under the umbrella of ``Mid-IR        
PbS-based active photon cages
R. Artinyan, A. Benamrouche, C. Belacel, A. Berthelot, P. Rojo Romeo, R. Peretti, B. Gonzalez-Alcevedo, G. Beaudin, V. Aimez, J.L. Leclercq, X. Letartre, S. Callard, , , , , , , ,
Europ. Material research Society EMRS lille (fr) 11-15 mai 2015       
Mid-infrared integrated photonics in a SiGe platform
L. Carletti, C. Blanchard, D. Allioux, C. Monat, R. Orobtchouk, P. Rojo Romeo, Z. Lin, C. Jamois, J.L. Leclercq, C. Grillet, X. Letartre, P. Ma, Y. Yu, B. Luther-Davies, S. Madden, D. Hudson, M. Sinobad, M. Brun, S. Nicoletti, P. Labeye
OECC 2015 shanghai (china) 28 june - 2 july 2015       
Photoluminescence polarization and piezoelectric properties of InAs/InP quantum rod-nanowires
R. Anufriev, N. Chauvin, J. Barakat, H. Khmissi, K. Naji, G. Patriarche, X. Letartre, M. Gendry, C. Bru-Chevallier
CSW 2014 Montpellier, France May, 11-15, 2014       
Optical characterization of active photon cages
R. Artinyan, A. Benamrouche, C. Belacel, A. Berthelot, A. Jurdyc, G. Beaudin, V. Aimez, P. Rojo Romeo, J.L. Leclercq, R. Peretti, X. Letartre, S. Callard
Photonics Europe Brussels, Belgium 14-17 April 2014 AbstractRecently, we developed a new family of 3D photonic hollow resonators which theoretically allow tight confinement of light in a fluid (gaz or liquid): the photon cages. These new resonators could be ideal for sensing applications since they not only localize the electromagnetic energy in a small mode volume but also enforce maximal overlap between this localized field and the environment (i.e. a potential volume of nano-particles). In this work, we will present numerical and experimental studies of the interaction of a photon cage optical mode with nano-emitters. For this, PbS quantum dot emitters in a PDMS host matrix have been introduced in photon cages designed to have optimal confinement properties when containing a PDMS-based active medium. Photoluminescence measurements have been performed and the presence of quantum dot emitters in the photon cages has been demonstrated. Keywords: Near-infrared microcavity, photonic-crystal, air-mode, colloidal quantum dots       
Coupling of quantum dots with a photon cage
R. Artinyan, A. Benamrouche, C. Belacel, A. Berthelot, P. Rojo Romeo, R. Peretti, B. Gonzalez-Alcevedo, G. Beaudin, V. Aimez, J.L. Leclercq, X. Letartre, S. Callard
CLEO 2014 San José, California, USA 8-13 June 2014       
Photonic crystal mirror based optical microsources for silicon photonics
X. Letartre, C. Blanchard, J.L. Leclercq, C. Seassal, P. Viktorovitch
The 7th International Photonics and OptoElectronics Meetings (POEM) Wuhan (China) 18-21 June 2014       
Complementary logic interface for high performan optical computing with OLUT
Z. Li, S. Le Beux, I. O Connor, C. Monat, X. Letartre
Very Large Scale Integration (VLSI-SoC), 2014 22nd International Conference playa del carmen (Mexico) 6-8 october 2014       
High index contrast/Photonic Crystal gratings: a wealth of new photonic functionality
P. Viktorovitch, X. Letartre, B. Ben Bakir, S. Menezo
Conference on High Contrast Metastructures III  San Francisco, CA FEB 04-06, 2014 AbstractHigh index contrast / Photonic Crystal membrane (HCG/PCM) resonators can be exploited to perform an arbitrarily adjustable molding of light at the wavelength scale: they can process free-space as well as wave-guided optical modes along a variety of addressing configurations and transfer functions, where the spectral, spatial, polarization, phase, group delay ... characteristics can be resolved accurately and adjusted at will. The physics of HCG resonators will be revisited based on a simple analytical approach and intuitive arguments, thus providing direct routes for design rules. Specifically, such desired functionalities as wavelength tuning and beam steering will be emphasized. Practical implementation of these functionalities will be presented in the case of VCSEL devices, where silicon HCG/PCM resonators are used as reflectors and are heterogeneously integrated with III-V semiconductor gain material, along a CMOS compatible technological approach.