Prof. Isabelle Ledoux-Rak Profile

Prof. Isabelle Ledoux-Rak

Head of LPQM Lab at Ecole normale superieure Paris-Saclay

SPIE Involvement:

Conference Program Committee | Author

Publications (22)

Proceedings Article | 21 May 2018 Paper

Silicon photonic micro-ring resonator dedicated to an optoelectronic oscillator loop

Phuong T. Do, Carlos Alonso-Ramos, Xavier Leroux, Diego Pérez-Galacho, Laurent Vivien, Isabelle Ledoux-Rak, Bernard Journet , Eric Cassan

Proceedings Volume 10686, 106860Y (2018) https://doi.org/10.1117/12.2307167

KEYWORDS: Resonators, Oscillators, Silicon photonics, Optoelectronics, Silicon, Microrings, Optical resonators, Waveguides

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Proceedings Article | 4 May 2018 Paper

Direct laser coding of plasmonic nanostructures for data storage applications

Fei Mao, Andrew Davis, Quang Cong Tong, Mai Hoang Luong, Chi Than Nguyen , Isabelle Ledoux-Rak, Ngoc Diep Lai

Proceedings Volume 10672, 106722Z (2018) https://doi.org/10.1117/12.2306762

KEYWORDS: Gold, Plasmonics, Nanoparticles, Data storage, Digital video discs, Binary data, Compact discs, Nanostructures

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Proceedings Article | 29 April 2016 Paper

Optimizing detection limits of optical resonator based sensors by optimization of real-time measurements of resonators response

David Chauvin, Isabelle Ledoux-Rak, Chi Thanh Nguyen

Proceedings Volume 9899, 98991J (2016) https://doi.org/10.1117/12.2227779

KEYWORDS: Sensors, Optical resonators, Transmittance, Spectral resolution, Performance modeling, Resonators, Chemical analysis, Tunable lasers, Microfluidics, Biological research, Optical resolution, Microresonators, Glucose, Signal to noise ratio, Signal detection

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Proceedings Article | 19 April 2016 Paper

Deterministic embedding of a single gold nanoparticle into polymeric microstructures by direct laser writing technique

Dam Thuy Trang Nguyen, Aurélien Pelissier, Kevin Montes, Quang Cong Tong, Hoang Minh Ngo, Isabelle Ledoux-Rak, Ngoc Diep Lai

Proceedings Volume 9884, 98842C (2016) https://doi.org/10.1117/12.2225936

KEYWORDS: Gold, Absorption, Nanoparticles, Photoresist materials, Multiphoton lithography, Fabrication, Photonic nanostructures, Polymers, Neptunium, Picosecond phenomena, Polymerization

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Proceedings Article | 18 April 2016 Paper

Fabrication of controllable form submicrometer structures on positive photoresist by one-photon absorption direct laser writing technique

Quang Cong Tong, Minh Thanh Do, Bernard Journet, Isabelle Ledoux-Rak, Ngoc Diep Lai

Proceedings Volume 9885, 988519 (2016) https://doi.org/10.1117/12.2225942

KEYWORDS: Photoresist materials, Fabrication, Absorption, Multiphoton lithography, Photonic crystals, Photonic crystal devices, Objectives, Photoresist developing, Optical properties, Finite-difference time-domain method, Polymers, Scanning electron microscopy, Continuous wave operation, Glasses

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Proceedings Article | 6 January 2015 Paper

A new technique to monitor the long-term stability of an optoelectronic oscillator.

Toan Thang Pham, Isabelle Ledoux-Rak, Bernard Journet, Van Yem Vu

Proceedings Volume 9450, 94500C (2015) https://doi.org/10.1117/12.2070357

KEYWORDS: Temperature metrology, Refractive index, Phase measurement, Oscillators, Distance measurement, Optoelectronics, Optical fibers, Optical filters, Electronic filtering, Digital signal processing

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Proceedings Article | 27 August 2014 Paper

Second harmonic generation from silver nanoparticles in aqueous solution with different protective agents

Hoang Ngo, Isabelle Ledoux-Rak

Proceedings Volume 9171, 91710Y (2014) https://doi.org/10.1117/12.2064663

KEYWORDS: Silver, Nanoparticles, Particles, Chemical species, Second-harmonic generation, Transmission electron microscopy, Harmonic generation, Nonlinear optics, Absorption, Optical properties

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Proceedings Article | 27 August 2014 Paper

Micro and nanostructuration of polymer materials and applications

Thi Thanh Ngan Nguyen, Mai Hoang Luong, Mai Trang Do, Duy Manh Kieu, Qinggele Li, Dam Thuy Trang Nguyen, Quang Cong Tong, Isabelle Ledoux-Rak, Ngoc Diep Lai

Proceedings Volume 9171, 91710O (2014) https://doi.org/10.1117/12.2064653

KEYWORDS: Polymers, Fabrication, Photoresist materials, Absorption, Multiphoton lithography, Laser applications, Photonic crystals, Polarization, Active optics, Laser optics

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Proceedings Article | 2 May 2014 Paper

Optimization of LOPA-based direct laser writing technique for fabrication of submicrometric polymer two- and three-dimensional structures

Mai Trang Do, Qinggele Li, Isabelle Ledoux-Rak, Ngoc Lai

Proceedings Volume 9127, 912703 (2014) https://doi.org/10.1117/12.2051910

KEYWORDS: Absorption, Fabrication, Multiphoton lithography, Polymers, 3D image processing, 3D optical data storage, Scanning electron microscopy, Photoresist materials, Polymerization, Ferroelectric materials

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Proceedings Article | 1 May 2014 Paper

Three-dimensional optical addressing by ultra low one-photon absorption microscopy

Qinggele Li, Mai Trang Do, Isabelle Ledoux-Rak, Ngoc Diep Lai

Proceedings Volume 9131, 91310Q (2014) https://doi.org/10.1117/12.2051916

KEYWORDS: Absorption, Microscopy, Light sources, Objectives, 3D image processing, Photons, Stereoscopy, Interfaces, Lenses, Pulsed laser operation

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The concept of three-dimensional (3D) optical addressing based on low one-photon absorption (LOPA) microscopy is theoretically and experimentally studied in detail. The numerical calculation results show that the intensity distribution of focused light beam strongly depends on the absorption of studied materials and on the numerical aperture of employed objective lenses. Obviously, in the case of LOPA based miscroscopy, with a significant low linear absorption and tight focusing conditions, the light intensity is not affected by absorption and the focused beam shape and intensity remain almost the same everywhere inside the absorbing material. This allows to use LOPA microscopy to perform a highly resolved focusing spot in three dimensions as achieved by the two-photon absorption (TPA) technique. The theoretical calculations were then experimentally verified by focusing different light sources with different objective lenses into a Rhodamine 6G (Rh6G) solution. The experimental results show that it is impossible to realize a deep focusing inside the Rh6G solution when using a laser wavelength at 532 nm (high absorption), even if the light beam is tightly focused. In contrast, by using a light source (coherent or incoherent), emitting a wavelength located in the low absorption range of the Rh6G solution, for example, at 633 nm, the light beam can be focused deeply inside the solution, similar to the result obtained by using a pulsed laser at 1064 nm (TPA). The LOPA based microscopy presents therefore a great advantage over conventional OPA and TPA methods. Indeed, since it operates on the basis of a one-photon absorption mechanism, it does not require an expensive pulsed light source, but only a simple setup and a low-cost, low power continuous laser source, as in the case of standard OPA. It, however, allows to deal with submicrometric 3D imaging and 3D fabrication, as well as 3D data storage, with similar performances as those obtained with TPA microscopy.

Proceedings Article | 2 February 2012 Paper

Vertically coupled polymer microresonators for optofluidic label-free biosensors

Camille Delezoide, Joseph Lautru, Joseph Zyss, Isabelle Ledoux-Rak, Chi Thanh Nguyen

Proceedings Volume 8264, 826416 (2012) https://doi.org/10.1117/12.908444

KEYWORDS: Polymers, Waveguides, Resonators, Microfluidics, Microresonators, Sensors, Cladding, Integrated optics, Molecules, Biosensors

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Proceedings Article | 3 November 2011 Paper

NLO characterization for novel borinates: evaluation of the N-B bond

R. Castro-Beltran, M. Rodríguez, G. Ramos-Ortíz, I. Ledoux-Rak, N. Farfán, R. Santillan

Proceedings Volume 8011, 801140 (2011) https://doi.org/10.1117/12.903410

KEYWORDS: Nonlinear optics, Boron, Absorption, Molecules, Metals, Printed circuit board testing, Chemical species, NOx, Second-harmonic generation, Solids

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Proceedings Article | 21 February 2011 Open Access

New developments in molecular photonics: from photoswitchable nonlinearities to nonlinear nanoplasmonics

Isabelle Ledoux-Rak, Khuyen Hoang-Thi, Anu Anu, Joseph Zyss

Proceedings Volume 7935, 79350T (2011) https://doi.org/10.1117/12.875090

KEYWORDS: Gold, Nonlinear optics, Neptunium, Metals, Nanoparticles, Absorption, Molecules, Chromophores, Switching, Molecular photonics

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Proceedings Article | 1 March 2010 Paper

High-performance electro-optic modulators realized with a commercial side-chain DR1-PMMA electro-optic copolymer

Sébastien Michel, Joseph Zyss, Isabelle Ledoux-Rak, Chi Thanh Nguyen

Proceedings Volume 7599, 75990I (2010) https://doi.org/10.1117/12.841339

KEYWORDS: Modulators, Electrodes, Waveguides, Electro optics, Polymers, Electro optic polymers, Cladding, Electrooptic modulators, Epoxies, Modulation

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Proceedings Article | 26 February 2010 Paper

Time evolution of an electro-optic modulator by detection of its nonlinear behavior

Dang Thanh Bui, Lam Duy Nguyen, Isabelle Ledoux-Rak, Bernard Journet

Proceedings Volume 7598, 75980R (2010) https://doi.org/10.1117/12.842054

KEYWORDS: Modulators, Electrooptic modulators, Modulation, Signal detection, Control systems, Microcontrollers, Optical amplifiers, Temperature metrology, Electro optic polymers, Signal processing

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Proceedings Article | 24 February 2006 Paper

Erbium-doped polymer-based materials and waveguides for amplification at 1,55 µm

A. Le Quang, E. Besson, R. Hierle, A. Mehdi, C. Reyé, R. Corriu, J. Zyss, S. Pietralunga, I. Ledoux

Proceedings Volume 6123, 612302 (2006) https://doi.org/10.1117/12.644655

KEYWORDS: Waveguides, Polymers, Erbium, Polymethylmethacrylate, Luminescence, Polymer multimode waveguides, Ions, Refractive index, Optical amplifiers, Wave propagation

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Proceedings Article | 18 December 2002 Paper

Hyperpolar multichromophoric nanoassembly for molecular nonlinear optics

Mireille Blanchard-Desce, M. Ait Amer Meziane, El Djouhar Rekai, Jean-Bernard Baudin, Ludovic Jullien, Isabelle Ledoux, Joseph Zyss

Proceedings Volume 4798, (2002) https://doi.org/10.1117/12.452066

KEYWORDS: Chromophores, Supramolecular assemblies, Absorption, Nonlinear optics, Luminescence, Molecules, Excimers, Dichroic materials, Optical properties, Systems modeling

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Proceedings Article | 18 December 2002 Paper

Nanoscale boomerang-shaped octupolar molecules derived from triphenylbenzene

Jeremie Brunel, Anny Jutand, Isabelle Ledoux, Joseph Zyss, Mireille Blanchard-Desce

Proceedings Volume 4798, (2002) https://doi.org/10.1117/12.452065

KEYWORDS: Molecules, Transparency, Nonlinear optics, Chromophores, Absorption, Bromine, Luminescence, Light scattering, Telecommunications, Ions

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Proceedings Article | 24 July 2002 Paper

Photophysical and second-order nonlinear properties of push-pull fluorinated 4-(dicyanomethylene)-pyranes

Stanislav Bondarev, Valentin Knyukshto, S. Tikhomirov, I. Kalosha, V. Tyvorski, D. Bobrov, N. Nevar, A. Turban, O. Kulinkovich, Isabelle Ledoux-Rak

Proceedings Volume 4751, (2002) https://doi.org/10.1117/12.475927

KEYWORDS: Picosecond phenomena, Luminescence, Molecules, Absorption, Polarizability, Silicon, Spectroscopy, Printed circuit board testing, Quantum efficiency, Nonlinear optics

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Proceedings Article | 29 November 2000 Paper

Alignment and aggregation studies of highly dipolar TCNQ adducts in guest-host systems

Nancy-Ann Hackman, David Bloor, Graham Cross, Mosurkal Ravi, Marek Szablewski, Isabelle Ledoux-Rak, Sandrine Deveau, Joseph Zyss

Proceedings Volume 4106, (2000) https://doi.org/10.1117/12.408501

KEYWORDS: Molecules, Chromophores, Nonlinear optics, Polymers, Absorption, Second-harmonic generation, Molecular aggregates, Polymer thin films, Molecular interactions, Harmonic generation

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Proceedings Article | 29 November 2000 Paper

First-order hyperpolarizabilities of multipolar molecules: experimental and theoretical analysis

Xue-Lin Yang, Remi Anemian, Thomas Zabulon, Chantal Andraud, Sophie Brasselet, Isabelle Ledoux-Rak, Joseph Zyss

Proceedings Volume 4106, (2000) https://doi.org/10.1117/12.408533

KEYWORDS: Molecules, Nonlinear optics, Molecular interactions, Light scattering, Systems modeling, Complex systems, Molecular lasers, Molecular photonics, Photonics, Ultrafast phenomena

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Proceedings Article | 24 May 2000 Paper

Electronic structure and electro-optical coefficients in push-pull chromophores incorporating the 1,3-dithiole-2-ylidene moiety as electron-donating part

Bouchta Sahraoui, I. Kityk, Isabelle Ledoux-Rak, Tan Nguyen, M. Salle, A. Gorgues

Proceedings Volume 4089, (2000) https://doi.org/10.1117/12.386779

KEYWORDS: Molecules, Chromophores, Electro optics, Nonlinear optics, Optimization (mathematics), Polymers, Matrices, Solid state electronics, Electronic components, Molecular interactions

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Showing 5 of 22 publications

Conference Committee Involvement (25)

Organic Photonic Materials and Devices XXVII

25 January 2025 | San Francisco, California, United States

Organic Photonic Materials and Devices XXVI

31 January 2024 | San Francisco, California, United States

Organic Photonic Materials and Devices XXV

1 February 2023 | San Francisco, California, United States

Organic Photonic Materials and Devices XXIV

26 January 2022 | San Francisco, California, United States

Organic Photonic Materials and Devices XXIII

6 March 2021 | Online Only, California, United States

Organic Photonic Materials and Devices XXII

5 February 2020 | San Francisco, California, United States

Organic Photonic Materials and Devices XXI

5 February 2019 | San Francisco, California, United States

Organic Photonic Materials and Devices XX

31 January 2018 | San Francisco, California, United States

Organic Photonic Materials and Devices XIX

30 January 2017 | San Francisco, California, United States

Nanophotonics

3 April 2016 | Brussels, Belgium

Organic Photonic Materials and Devices XVIII

15 February 2016 | San Francisco, California, United States

Organic Photonic Materials and Devices XVII

9 February 2015 | San Francisco, California, United States

Organic Photonic Materials and Devices XVI

3 February 2014 | San Francisco, California, United States

Organic Photonic Materials and Devices XV

4 February 2013 | San Francisco, California, United States

Organic Photonic Materials and Devices XIV

23 January 2012 | San Francisco, California, United States

Organic Photonic Materials and Devices XIII

24 January 2011 | San Francisco, California, United States

Organic Photonic Materials and Devices XII

26 January 2010 | San Francisco, California, United States

Organic Photonic Materials and Devices XI

27 January 2009 | San Jose, California, United States

Organic Photonic Materials and Devices X

22 January 2008 | San Jose, California, United States

Organic Photonic Materials and Devices IX

21 January 2007 | San Jose, California, United States

Organic Photonic Materials and Devices VIII

23 January 2006 | San Jose, California, United States

Photonic Materials, Devices, and Applications

9 May 2005 | Sevilla, Spain

Organic Photonic Materials and Devices VII

24 January 2005 | San Jose, California, United States

Organic Photonic Materials and Devices VI

27 January 2004 | San Jose, CA, United States

Organic Photonic Materials and Devices V

27 January 2003 | San Jose, CA, United States

Showing 5 of 25 Conference Committees

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