OµS I OµS II ONS
Pagano, Hotel La Palma Relais, Hotel La Palma Hotel La Residenza
OPTICAL MICROSCOPY, IMAGING
& CHARACTERIZATION METHODS
OPTICAL MATERIALS FOR HYBRID & MONOLITHIC INTEGRATION
09:00>09:30
Photonic thermotronics Philippe Ben-Abdallah and Svend-Age Biehs
The control of electric currents in solids is at the origin of the modern computer technology which has revolutionized our daily life. Until the 2000s no thermal counterpart had been developed to control the flow of heat. In this talk we introduce basic building blocks [1-3] for a contactless technology dedicated to the thermal management. [ONS’15 _34] 09:30>10:00
PhoXonic crystals as phonon sources
Daniel Navarro-Urrios, Jordi Gomis-Bresco, Francesc Alzina, Alejandro Martinez, Nestor E. Capuj, Said El-Jallal, Mourad Oudich, Alejandro Griol, Yan Pennec, Bahram Djafari-Rouhani, Emigdio Chavez Angel and Clivia M. Sotomayor Torres Simultaneous confinement of light and sound in the same cavity enhances the phonon-photon interaction resulting in the optomechanical (OM) effect. A particular case are phoXonic crystals based on the concepts of photonic and phononic crystals, targeting high frequency phonons. We report OM transduction modes inside the complete bandgap, a novel spontaneous synchronization process and phonon generation in a Si 1D phoXonic crystal cavity at 300K.
[ONS’15 _35] 10:00>10:15
Near-Field Radiative Heat Transfer between Metallic Metasurfaces Jin Dai, Sergey Dyakov and Min Yan We numerically demonstrate the possibility to enhance radiative heat transfer between two metallic plates over a wide range of frequencies in the near-field regime by decorating the surfaces with a periodic array of grooves. We show the properties of transmission factor spectrum for TM polarisation between two such metasurfaces with singly 09:00>09:30
Multi-dimensional Displacement Measurement based on signal separation using Holographic Interferometry
Pramod Rastogi
This talk will encompass the latest trends and developments in multi-dimensional displacement measurement techniques in holographic interferometry using high resolution methods in signal processing.
Experimental results and the statistical performance of the algorithms will be presented when applied to a multi-wave holographic interferometry setup for the simultaneous measurement of in-plane and out-of-plane displacements on a deformed object submitted to load.
[OµS’15 _57] 09:30>10:00
Simultaneous 3-D visualization and position tracking of optically trapped particles using optical diffraction tomography Yongkeun Park
We present a combined system employing optical diffraction tomography and holographic optical tweezers capable of simultaneous 3-D visualization of the shapes and tracking positions of trapped microscopic samples. We demonstrated the manipulation of a silica bead toward a white blood cell having complicated internal structures, and the tomographic measurements of 3-D dynamics of the white blood cell as it responded to an approaching glass bead in the high acquisition rate. [OµS’15 _58]
09:00>09:30
New developments in lithium niobate nanophotonics Maria-Pilar Bernal, Abdoulaye Ndao, Wentao Qiu, Nadège Courjal, Gwenn Ulliac, Roland Salut, Fadi I. Baida and Venancio Calero
The optics community has used since decades lithium niobate (LN) material.
Due to its multiphysical nature it is straightforward to imagine a LN chip in which thousands of optical functions are integrated. I will present our work in order to achieve this goal. Different active LN nanoophotonic functions will be presented.
The possibility of using LN thin films has allowed us to improve the performances.
Tunable Fano LN photonic crystals attached to a fiber for sensing will be demonstrated.
[OµS’15 _59] 09:30>10:00
Integrated Resonator Platforms for Silicon Photonics
Mher Ghulinyan
We will present an overview of novel technological platforms for the realization of fully integrated microresonator structures for silicon photonics. As a particular example, we will describe thin (80nm) Si3N4 ultra-high quality factor (3.7◊10^6 at 784 nm) ring resonators monolithically integrated on a silicon chip.
The devices are based on a strip-loaded configuration in which the absence of physically etched lateral boundaries leads to significantly reduced scattering losses.
[OµS’15 _60] 10:00>10:20
Net gain dynamics in small-mode volume planar organic
microresonators
Christian Tzschaschel, Markas Sudzius, Andreas Mischok, Robert Brueckner, Hartmut Froeb and KarlLeo
We report a room temperature study of net gain measurements in planar organic microlasers with a limited amount of gain material. We show that the evolution of
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Saturday, 19 September 2015
OµS I OµS II ONS
Pagano, Hotel La Palma Relais, Hotel La Palma Hotel La Residenza
OPTICAL MICROSCOPY, IMAGING
& CHARACTERIZATION METHODS
OPTICAL MATERIALS FOR HYBRID & MONOLITHIC INTEGRATION
that between two metasurfaces with a single groove depth. Comparing to that of two unstructured plates, heat exchange is enhanced by a factor of 53.5 by having four different groove depths. The strong enhancement in radiative heat transfer between such two metasurfaces with grooves is attributed to existence of spoof surface plasmon polaritons. The peak frequencies in transmission factor spectrum depend more on the geometries rather than the material properties. These characters open a new route in promoting heat transfer through radiation, especially when conduction and convection are not available. [ONS’15 _36]
10:15>10:30
Nondestructive characterization of thermochromic materials for tunable thermal devices Roberto Li Voti, GrigoreLeahu and Concita Sibilia
Thermochromic materials, changing their spectral properties as a function of the temperature, are extensively studied in the search for active control of thermal emission. These are for example niobium dioxide (NbO2), vanadium sesquioxide (V2O3) and vanadium dioxide (VO2). We present here a detailed infrared study of the semiconductor-to-metal transition (SMT) in a vanadium dioxide (VO2) film deposited on silicon wafer.
[ONS’15 _37] 10:30>10:45
Nondestructive evaluation of the thermoelastic properties of contact lenses by photothermal deflection technique
Grigore Leahu, Roberto Li Voti and Concita Sibilia
Mechanical characteristics of soft contact lens material are critical in design, quality control processes, properties and comfort.
Mechanical properties such as elastic modulus, stiffness, flexural rigidity and viscoelasticity thus have major impact on the ability to maintain the physical geometry and dimension, on the capability to return to the original shape at removal of external load, on the adhesion to the 10:00>10:20
Holographic imaging of cell necrosis induced by laser stimulation
Martina Mugnano, Alejandro Calabuig, Lisa Miccio, Simonetta Grilli and Pietro Ferraro
We are using the label free technique of holographic microscopy to analyse cellular parameters including morphological changes, volume variations and cell photodamage caused by intense laser stimulation directly in the cell culture environment. Furthermore, a preliminary study on cell apoptosis induced by exposure to cadmium chloride was carried out.
[OµS’15 _62] 10:20>10:40
On Time Response of Single Nanowires
Marc Currie, Anna Persano, Antonietta Taurino, Fabio Quaranta, Paulo Prete, Nico Lovergine and Bahram Nabet
We report on electrooptically sampled time response of nanowires with core of GaAs and shell of AlGaAs (CSNW). The responsivity of these CSNWs is much larger than similar GaAs bulk devices, and Full-Width Half Max (FWHM) of ~13 ps is much faster than transit time of carriers in the nearly 3.5 um length of this wire.
We discuss possible mechanisms responsible for these remarkable characteristics. [OµS’15 _63] 10:40>11:00
Novel light-driven micro-robotics Jesper Gluckstad
Modern micro- and nanoscopy demands functionalities, not only for observing micro-biologic phenomena, but also for reaching into and manipulating mesoscopic constituents. This post-deadline contribution describes our latest generation of light-crafted micro-tools for enabling all-optical light-activated robotics on microscopic scales.
[OµS’15 _64]
10:20>10:40
Interplay between biological samples and photorefractive fields Lisa Miccio, Martina Mugnano, Valentina Marchesano, Simonetta Grilli and Pietro Ferraro
Photorefractive fields in ferroelectric crystals are used to manipulate cells, maintaining them alive. The interaction of Escherichia coli with the field generated on the surface of iron-doped lithium niobate crystals is investigated. Bacteria trapping and orientation are demonstrated.
[OµS’15 _65]
Saturday, 19 September 2015
OµS I OµS II ONS
Pagano, Hotel La Palma Relais, Hotel La Palma Hotel La Residenza
OPTICAL MICROSCOPY, IMAGING
& CHARACTERIZATION METHODS
OPTICAL MATERIALS FOR HYBRID & MONOLITHIC INTEGRATION
10:45>11:00
Liquid-crystal tunable terahertz metamaterials and absorbers Dimitrios C. Zografopoulos, Antonio Ferraro, Goran Isic, Borislav Vasic, Rados Gajic and Romeo Beccherelli We propose novel liquid-crystal tunable metamaterial devices for terahertz wave reconfiguration. Thin nematic material layers are introduced in metamaterial cavities, thus yielding extensive tunability in their electromagnetic response with fast response times.
[ONS’15 _39]
10:40>11:20 COFFEE BREAK 11:00>11:20 COFFEE BREAK
11:20>13:00 YEAR OF LIGHT SESSION END OF EOS TOPICAL MEETINGS
NOTES
NOTES
History
The European Optical Society (EOS) was founded in 1991. The purpose of the society is to contribute to progress in optics and related scien-ces, and to promote their applications at the European and international levels, by bringing together individuals and legal entities involved in these disciplines and their applications. EOS is a not for profit organisation and serves as the joint forum for all individuals, companies, orga-nisations, educational institutions, and learned and professional societies, who recognise the opportunity and challenge that a common Euro-pean base provides for the development of optics in its broadest sense. EOS organises recognized topical meetings, conferences, workshops and other events, publishes journals and is an important player on the European level. 22 national optical societies and a great number of individuals and companies are currently members of EOS (www.myeos.org).