Prof. Mordechai Segev Profile

Prof. Mordechai Segev

Professor at Technion-Israel Institute of Technology

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 11 September 2013 Paper

Photonic Floquet topological insulators

Mikael Rechtsman, Julia Zeuner, Yonatan Plotnik, Yaakov Lumer, Daniel Podolsky, Felix Dreisow, Stefan Nolte, Mordechai Segev, Alexander Szameit

Proceedings Volume 8808, 880815 (2013) https://doi.org/10.1117/12.2023842

KEYWORDS: Waveguides, Dielectrics, Light wave propagation, Light scattering, Scattering, Photonic crystals, Magnetism, Electrons, Photons, Graphene

Read Abstract +

Topological insulators are a new phase of matter, with the striking property that conduction of electrons occurs only on the surface. In two dimensions, surface electrons in topological insulators do not scatter despite defects and disorder, providing robustness akin to superconductors. Topological insulators are predicted to have wideranging applications in fault-tolerant quantum computing and spintronics. Recently, large theoretical efforts were directed towards achieving topological insulation for electromagnetic waves. One-dimensional systems with topological edge states have been demonstrated, but these states are zero-dimensional, and therefore exhibit no transport properties. Topological protection of microwaves has been observed using a mechanism similar to the quantum Hall effect, by placing a gyromagnetic photonic crystal in an external magnetic field. However, since magnetic effects are very weak at optical frequencies, realizing photonic topological insulators with scatterfree edge states requires a fundamentally different mechanism - one that is free of magnetic fields. Recently, a number of proposals for photonic topological transport have been put forward. Specifically, one suggested temporally modulating a photonic crystal, thus breaking time-reversal symmetry and inducing one-way edge states. This is in the spirit of the proposed Floquet topological insulators, where temporal variations in solidstate systems induce topological edge states. Here, we propose and experimentally demonstrate the first external field-free photonic topological insulator with scatter-free edge transport: a photonic lattice exhibiting topologically protected transport of visible light on the lattice edges. Our system is composed of an array of evanescently coupled helical waveguides arranged in a graphene-like honeycomb lattice. Paraxial diffraction of light is described by a Schrödinger equation where the propagation coordinate acts as ‘time’. Thus the waveguides' helicity breaks zreversal symmetry in the sense akin to Floquet Topological Insulators. This structure results in scatter-free, oneway edge states that are topologically protected from scattering.

Proceedings Article | 4 April 2005 Paper

New windows of opportunity for all-optical information processing: spatial solitons, EIT in microcavities, etc.

Marin Solja-i, Elefterios Lidorikis, John Joannopoulos, Lene Hau, Mordechai Segev, Kenneth Steiglitz, Charalambos Anastassiou

Proceedings Volume 5735, (2005) https://doi.org/10.1117/12.601669

KEYWORDS: Solitons, Optical microcavities, Spatial solitons, Chemical species, Transparency, Photonic crystals, Dispersion, Data processing, All optical signal processing, Fusion energy

Read Abstract +

Proceedings Article | 28 January 2005 Paper

Diffraction management in 2D waveguide arrays

Aqiang Guo, Yongan Tang, Will Black, Gregory Salamo, Mordechai Segev

Proceedings Volume 5646, (2005) https://doi.org/10.1117/12.575567

KEYWORDS: Waveguides, Diffraction, Crystals, Laser crystals, Laser beam diagnostics, Photography, Nonlinear crystals, Optical arrays, Physics, Nonlinear optics

Read Abstract +

Proceedings Article | 18 November 1999 Paper

Self-trapping of incoherent bright and dark beams

Matthew Mitchell, Zhigang Chen, Mordechai Segev, Tamer Coskun, Demetrios Christodoulides

Proceedings Volume 3904, (1999) https://doi.org/10.1117/12.370397

KEYWORDS: Solitons, Waveguides, Crystals, Laser crystals, Diffraction, Diffusers, Spatial solitons, Nonlinear crystals, Light, Light sources

Read Abstract +

Proceedings Article | 19 July 1999 Paper

Guiding light by incoherent light

Zhigang Chen, Mordechai Segev

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354775

KEYWORDS: Solitons, Waveguides, Spatial solitons, Light sources, Laser beam diagnostics, Light emitting diodes, Optical vortices, Crystals, Channel waveguides, High power lasers

Read Abstract +

Proceedings Article | 23 June 1999 Paper

Photorefractive spatial solitons

Ming-Feng Shih, Mordechai Segev, Zhigang Chen, Matthew Mitchell, Demetrios Christodoulides, Gregory Salamo

Proceedings Volume 3609, (1999) https://doi.org/10.1117/12.351073

KEYWORDS: Solitons, Waveguides, Spatial solitons, Nonlinear optics, Refractive index, Diffraction, Beam propagation method, Particles, Wave propagation, Crystals

Read Abstract +

Proceedings Article | 30 September 1996 Paper

Sequences of high-order dark photorefractive spatial solitons and soliton-induced waveguides formed in bulk SBN

Zhigang Chen, Mordechai Segev

Proceedings Volume 2896, (1996) https://doi.org/10.1117/12.253214

KEYWORDS: Solitons, Crystals, Laser crystals, Spatial solitons, Waveguides, Mirrors, Beam propagation method, Modulation, Photography, Electro optics

Read Abstract +

Proceedings Article | 6 July 1994 Paper

Photorefractive self-focusing and defocusing as an optical limiter

Galen Duree, Gregory Salamo, Mordechai Segev, Amnon Yariv, Edward Sharp, Ratnakar Neurgaonkar

Proceedings Volume 2229, (1994) https://doi.org/10.1117/12.179585

KEYWORDS: Polarization, Crystals

Read Abstract +

Proceedings Article | 9 November 1993 Paper

High-space bandwidth product computer-generated holography using volume holography

Joseph Rosen, Mordechai Segev, Amnon Yariv, Jacob Barhen

Proceedings Volume 2026, (1993) https://doi.org/10.1117/12.163575

KEYWORDS: Computer generated holography, Holograms, Volume holography, Spatial light modulators, Binary data, 3D image reconstruction, Crystals, Diffraction, Holography, Image resolution

Read Abstract +

Showing 5 of 9 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years