Dr. Haim Suchowski Profile

Dr. Haim Suchowski

Principal Investigator at Tel Aviv Univ

SPIE Involvement:

Author

Proceedings Article | 13 May 2024 Paper

Toward real-time digital twin optical simulations

Michael Mrejen, Assaf Levanon, Roman Vander, Arkady Rudnitsky, Yenon Gavish, Gil Noy, Haim Suchowski

Proceedings Volume 12798, 127982U (2024) https://doi.org/10.1117/12.2692555

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Proceedings Article | 14 March 2018 Presentation

Pulse shaping of broadband Adiabatic SHG from a Ti:sapphire oscillator (Conference Presentation)

Assaf Levanon, Asaf Dahan, Achiya Nagler, Erga Lifshitz, Eyal Bachar, Michael Mrejen, Haim Suchowski

Proceedings Volume 10516, 105160R (2018) https://doi.org/10.1117/12.2289492

KEYWORDS: Second-harmonic generation, Frequency conversion, Pulse shaping, Oscillators, Ultrafast phenomena, Nonlinear optics, Sapphire, Ultrafast lasers, Pulsed laser operation, Laser applications

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Proceedings Article | 14 March 2018 Presentation

Ultrafast near-field imaging of excitonic waves formation and propagation in WSe2 waveguides (Conference Presentation)

Michael Mrejen, Lena Yadgarov, Uri Arieli, Assaf Levanon, Haim Suchowski

Proceedings Volume 10521, 1052107 (2018) https://doi.org/10.1117/12.2289461

KEYWORDS: Ultrafast imaging, Waveguides, Near field, Near field scanning optical microscopy, Excitons, Ultrafast phenomena, Plasmons, Polaritons, Femtosecond phenomena, Light wave propagation

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Over the recent years, van der Waals (vdW) materials, a class of materials composed of weakly bound two-dimensional (2D), atomically thin, crystalline layers, have attracted great interest due to their ability to deeply confine light and therefore significantly enhance its interaction with matter. This interaction is embodied in coupled states between light and the polarization of the media, polaritons. The most studied type of polaritons, plasmon polariton, stems from the collective oscillations of conduction electrons. These, however, suffer great losses and therefore offer limited applications. Recently, among the several other types of polaritons supported by vdW materials, the exciton polariton (EP) has stimulated intense research efforts because it can sustain both strong light– matter interactions and long-distance propagation that is necessary for applications associated with energy harvesting or information manipulation and transfer. In this context, WSe2 is of particular interest for integrated applications since it supports EP modes in the Visible- Near Infrared (VIS-NIR) spectral region at room temperature due to its tightly bond excitonic state. In the quest to unravel the underlying physics, scanning near field optical microscope (SNOM) has provided valuable insights on the nature of the steady state EP modes sustained in vdW and in WSe2 in particular. However the dynamics of the EP formation, happening in the first few hundreds of femtoseconds subsequent to light absorption, remains largely unexplored. Here we employ a unique broadband ultrafast near-field pump-probe imaging method and observe for the first time, at femtosecond and nanometric spatiotemporal scale, the dynamics of the EP waves generation and propagation in WSe2 waveguides. Our observations suggest an important interplay between the waveguide EP mode and the tip-supported plasmon. Morever, we observe an intriguing ultrafast change in the EP waveguiding properties of the WSe2 waveguides happening in the first few hundreds of femtoseconds of the EP wave formation. Our method paves the way to in-situ ultrafast coherent control of EPs modes in vdW materials.

Conference Committee Involvement (2)

Nanophotonics IX

3 April 2022 | Strasbourg, France

Nanophotonics VIII

6 April 2020 | Online Only, France

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