Prof. Costas M. Soukoulis Profile

Prof. Costas M. Soukoulis

Distinguished Professor of LAS

SPIE Involvement:

Author

Proceedings Article | 24 April 2020 Presentation

A platform for ultrafast control in THz graphene-based metasurfaces

Anna Tasolamprou, Anastasios Koulouklidis, George Kenanakis, Christina Daskalaki, Stelios Tzortzakis, Charalampros Mavidis, George Deligiorgis, Zacharias Viskadourakis, Polina Kuzhir, Maria Kafesaki, Eleftherios Economou, Costas Soukoulis

Proceedings Volume 11390, 113900B (2020) https://doi.org/10.1117/12.2559377

KEYWORDS: Terahertz radiation, Ultrafast phenomena, Graphene, Electromagnetism, Electromagnetic radiation, Modulators, Carbon, Chemical species, Optical properties, Modulation

Read Abstract +

Proceedings Article | 23 May 2018 Presentation

Silicon photonic crystal beam steering and frequency splitting at telecom wavelengths based on the manipulation of surface states (Conference Presentation)

Anna Tasolamprou, Thomas Koschny, Maria Kafesaki, Costas Soukoulis

Proceedings Volume 10686, 1068616 (2018) https://doi.org/10.1117/12.2306481

KEYWORDS: Silicon, Silicon photonics, Photonic crystals, Beam steering, Wave propagation, Dielectrics, Interfaces, Waveguides, Free space, Optical spectroscopy

Read Abstract +

Dielectric, ohmic-loss-free, finite photonic crystals (PCs) may sustain the propagation of highly confined surface waves that propagate bound to the interface of the bulk structure and the free space. For many years the dielectric photonic crystals surface states have been treated as a subsidiary effect related to the inevitable finite size of the PCs in realistic implementations. However, in the recent years it has been realized that the features of the dielectric surface states and their impact to the wave exit from the photonic crystal structure render the relevant structures suitable components for a variety of applications, including optical spectroscopy, sensing, intercomponent coupling, etc. In this work we present the design of a silicon-based PC component that couples the modes that propagate through the bulk structure into outgoing, free space propagating beams with high directionality. In addition to previous works involving silicon-based PCs for beam collimation in the near infrared and optical regime, we demonstrate here, that the (frequency depended) emission angle of the generated beams can be controlled by properly engineering the PC termination. Thus the component may serve as a beam steering structure or a de-multiplexer in the optical telecommunications wavelength band (~1.5 μm). Our design takes into account the state-of-the-art nano-fabrication technology and all the constraints arising from the treatment of silicon-based periodic media in this frequency regime. It consists of air holes drilled through an infinite silicon slab, arranged in a standard hexagonal lattice with periodicity α = 320 nm. Within the bulk photonic crystal we assume a line-defect waveguide that leads to the PC-air interface, where a properly designed termination layer of air holes is imprinted. The termination is designed to induce surface states at the PC-air interface with desirable dispersion and spatial characteristics. The line-defect waveguide is an area of unperforated silicon slab and it is chosen since it is a widely used scheme for guiding energy through the reflective photonic crystals; therefore, our design is compatible with the majority of the silicon-based PCs circuit components. By properly designing the interfacial termination layer we can tailor the properties of the non-radiating, dark, surface states in order to adapt and match the waveguide propagating modes and the free-space modes. As a result, we demonstrate a silicon-based photonic crystal structure that provides (a) the generation of well-defined and highly directional beams at the exit of the photonic crystal structure; (b) efficient beam multiplexing, i.e., the formation of two well defined beams that exhibit sufficiently high spectral isolation, as well as sufficiently high spatial separation. In particular we present two design approaches; the first is able to generate two beams at the operation wavelengths λ1 = 1.37 μm and λ2 = 1.5 μm, with high spatial separation defined by the emission angles φ1 = +20 deg and φ2 = -23 deg and the second generates two beams at λa = 1.42 μm and λb = 1.52 μm with emission angle φa = +1 deg and φb = 23 deg. The wavelengths of operation, as well as the emission angle, can be engineered at will.

Proceedings Article | 17 August 2014 Paper

Beam shaping and manipulation in photonic crystal structures (presentation video)

Anna Tasolamprou, Lei Zhang, Maria Kafesaki, Thomas Koschny, Costas Soukoulis

Proceedings Volume 9162, 91620I (2014) https://doi.org/10.1117/12.2064169

KEYWORDS: Beam shaping, Photonic crystals, Video, Wave propagation, Beam propagation method, Optical design, Beam controllers, Dielectrics, Collimation, Current controlled current source

Read Abstract +

Proceedings Article | 2 May 2014 Paper

Metamaterials enhancing optical forces

Vincent Ginis, Philippe Tassin, Costas Soukoulis, Irina Veretennicoff

Proceedings Volume 9125, 91250N (2014) https://doi.org/10.1117/12.2052511

KEYWORDS: Waveguides, Metamaterials, Electromagnetism, Cladding, Near field optics, Scattering, Dielectrics, Geometrical optics, Optical tweezers, Magnetism

Read Abstract +

The interaction between light and matter involves not only an energy transfer, but also the transfer of linear momentum. In everyday life applications this linear momentum of light is too small to play any significant role. However, in nanoscale dimensions, the associated optical forces start to play an increasingly important role. These forces are, e.g., large enough for exiting experiments in the fields of cavity-optomechanics, laser cooling and optical trapping of small particles. Recently, it has been suggested that optical gradient forces can also be employed for all-optical actuation in micro- and nanophotonic systems. The typical setup consists of two slab waveguides positioned in each others vicinity such that they are coupled through the interaction of the evanescent tails. Although the gradient forces between these waveguides can be enhanced considerably using electromagnetic resonators or slow-light techniques, the resulting displacements remain relatively small. In this contribution, we present an alternative approach to enhance optical gradient forces between waveguides using a combination of transformation optics and metamaterials. Our design starts from the observation that gradient forces exponentially decay with the separation distance between the waveguides. Therefore, we employ transformation optics to annihilate the apparent distance for light between the waveguides. Analytical calculations confirm that the resulting forces indeed increase when such an annihilating cladding is inserted. Subsequently, we discuss the metamaterial implementation of this annihilating medium. Such lensing media automatically translate into anisotropic metamaterials with negative components in the permittivity and permeability tensors. Our full-wave numerical simulations show that the overall amplification is highly limited by the loss-tangent of the metamaterial cladding. However, as this cladding only needs to operate in the near-field for a specific polarization, we can also consider single-negative metamaterial implementations. We finally demonstrate that in this way metamaterials can support optical forces enhanced by more than 200 times [Phys. Rev. Lett. 110, 057401 (2013)].

Proceedings Article | 11 September 2013 Paper

Transforming optical forces

Vincent Ginis, Philippe Tassin, Costas Soukoulis, Irina Veretennicoff

Proceedings Volume 8806, 880603 (2013) https://doi.org/10.1117/12.2025203

KEYWORDS: Waveguides, Metamaterials, Electromagnetism, Integrated optics, Geometrical optics, Scattering, Dielectrics, Cladding, Nanophotonics, Radio propagation

Read Abstract +

Proceedings Article | 15 October 2012 Paper

Design of nanophotonic elements with transformation optics

Vincent Ginis, Philippe Tassin, Jan Danckaert, Costas Soukoulis, Irina Veretennicoff

Proceedings Volume 8463, 846314 (2012) https://doi.org/10.1117/12.2009025

KEYWORDS: Dielectrics, Electromagnetism, Electroluminescent displays, Optical components, Maxwell's equations, Americium, Nanophotonics, Metamaterials, Electromagnetic radiation, Optical design

Read Abstract +

Proceedings Article | 11 September 2010 Paper

Chiral metamaterials reduce the attractive Casimir force

R. Zhao, Th. Koschny, E. Economou, C. Soukoulis

Proceedings Volume 7754, 77540Z (2010) https://doi.org/10.1117/12.862555

KEYWORDS: Chiral metamaterials, Magnetism, Resonators, Silver, Terahertz radiation, Physics, Dielectrics, Picosecond phenomena, Circuit switching, Reflection

Read Abstract +

Proceedings Article | 29 April 2010 Paper

Subwavelength optical cavities with high quality factor

Vincent Ginis, Philippe Tassin, Costas Soukoulis, Irina Veretennicoff

Proceedings Volume 7711, 77110U (2010) https://doi.org/10.1117/12.854602

KEYWORDS: Electromagnetism, Resonators, Microresonators, Dielectrics, Optical microcavities, Metamaterials, Optical resonators, Electromagnetic radiation, Refraction, Spherical lenses

Read Abstract +

Proceedings Article | 6 May 2008 Paper

Periodically structured plasmonic waveguides

W. Saj, S Foteinopoulou, M. Kafesaki, C. Soukoulis, E. Economou

Proceedings Volume 6987, 69870Y (2008) https://doi.org/10.1117/12.786569

KEYWORDS: Waveguides, Silver, Glasses, Dispersion, Signal attenuation, Finite-difference time-domain method, Wave propagation, Plasmonic waveguides, Signal processing

Read Abstract +

Proceedings Article | 4 May 2007 Paper

Magnetic response and negative refractive index of metamaterials

Th. Koschny, J. Zhou, C. M. Soukoulis

Proceedings Volume 6581, 658103 (2007) https://doi.org/10.1117/12.724176

KEYWORDS: Magnetism, Terahertz radiation, Metals, Metamaterials, Inductance, Microwave radiation, Dielectrics, Capacitance, Refractive index, Plasmonics

Read Abstract +

Proceedings Article | 27 September 2005 Paper

Numerical investigation of light scattering off split-ring resonators

Sven Burger, Lin Zschiedrich, Roland Klose, Achim Schädle, Frank Schmidt, Christian Enkrich, Stefan Linden, Martin Wegener, Costas Soukoulis

Proceedings Volume 5955, 595503 (2005) https://doi.org/10.1117/12.622184

KEYWORDS: Magnetism, Split ring resonators, Geometrical optics, Near infrared, Light scattering, Chemical elements, Metamaterials, Finite element methods, Polarization, Gold

Read Abstract +

Proceedings Article | 9 July 2004 Paper

Low-loss photonic crystal and monolithic InP integration: bands, bends, lasers, and filters

Henri Benisty, Claude Weisbuch, Segolene Olivier, Romuald Houdre, Rolando Ferrini, D. Leuenberger, Barbara Wild, Benoit Lombardet, Min Qiu, Srinivasan Anand, Mikael Mulot, Anders Karlsson, Marcin Swillo, B. Jazkorzynska, M. Agio, Maria Kafesaki, Costas Soukoulis, A. Talneau, Martin Kamp, Alfred Forchel, Juergen Moosburger, Thomas Happ, Guang-Hua Duan, C. Cuisin, J.-P. Chandouineau, O. Drisse, F. Gaborit, L. Legouezigou, O. Legouezigou, F. Lelarge, Francis Poingt, F. Pommereau, Bruno Thedrez

Proceedings Volume 5360, (2004) https://doi.org/10.1117/12.538486

KEYWORDS: Waveguides, Photonic crystals, Optical filters, Mirrors, Etching, Heterojunctions, Finite-difference time-domain method, Wavelength division multiplexing, Photomicroscopy, Photonic integrated circuits

Read Abstract +

Proceedings Article | 1 April 1994 Paper

Transmission and reflection properties of periodic dispersive materials

Mihail Sigalas, C. Chan, Kai Ho, C. Soukoulis

Proceedings Volume 2117, (1994) https://doi.org/10.1117/12.171682

KEYWORDS: Lithium, Silicon, Chlorine, Ions, Solids, Semiconducting wafers, Laser induced plasma spectroscopy, Crystals, Toxic industrial chemicals, Lawrencium

Read Abstract +

Showing 5 of 13 publications

SPIE Conference Volume | 10 December 2007

Photonics: Design, Technology, and Packaging III

SPIE Conference Volume | 26 September 2005

Metamaterials

Conference Committee Involvement (19)

Metamaterials XIV

26 April 2023 | Prague, Czech Republic

Metamaterials XIII

19 April 2021 | Online Only, Czech Republic

Metamaterials

3 April 2019 | Prague, Czech Republic

Metamaterials

26 April 2017 | Prague, Czech Republic

Metamaterials, Metadevices, and Metasystems 2015

9 August 2015 | San Diego, California, United States

Metamaterials

15 April 2015 | Prague, Czech Republic

Metamaterials, Metadevices, and Metasystems 2014

17 August 2014 | San Diego, California, United States

Metamaterials: Fundamentals and Applications VI

25 August 2013 | San Diego, California, United States

Metamaterials VIII

17 April 2013 | Prague, Czech Republic

Metamaterials: Fundamentals and Applications V

12 August 2012 | San Diego, California, United States

Metamaterials: Fundamentals and Applications IV

21 August 2011 | San Diego, California, United States

Metamaterials

20 April 2011 | Prague, Czech Republic

Metamaterials

12 April 2010 | Brussels, Belgium

Metamaterials IV

20 April 2009 | Prague, Czech Republic

Metamaterials

7 April 2008 | Strasbourg, France

Photonics: Design, Technology, and Packaging III

5 December 2007 | Canberra, ACT, Australia

Photonic Materials, Devices, and Applications

2 May 2007 | Maspalomas, Gran Canaria, Spain

Metamaterials

16 April 2007 | Prague, Czech Republic

Metamaterials

30 August 2005 | Warsaw, Poland

Showing 5 of 19 Conference Committees

Keywords/Phrases

Search In:

Publication Years