1 / 6

Dimitris Papazoglou

Dimitris Papazoglou. Assistant Professor , Affiliated faculty IESL-FORTH Senior member of the UNIS group. PhD: 1998, Aristotle University of Thessaloniki, Physics. General research area: Optics (experimentalist). Bibliometric info: 42 publications, 304 citations, h factor: 11.

goldy
Télécharger la présentation

Dimitris Papazoglou

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Dimitris Papazoglou Assistant Professor , Affiliated faculty IESL-FORTH Senior member of the UNIS group PhD: 1998, Aristotle University of Thessaloniki, Physics General research area: Optics (experimentalist) Bibliometric info: 42 publications, 304 citations, h factor: 11 Research activity is taking place in IESL-FORTH facilities Ultra-intense nonlinear interactions and sources (UNIS) lab

  2. Research activities Nonlinear interactions of ultra-short laser pulses with transparent media Exotic optical waves and light bullets Wavefront sensing and manipulation Active collaborations Stelios Tzortzakis (IESL-FORTH) Nikos Efremidis (UOC) George Stegeman (CREOL) Demetrios Christodoulides (CREOL)

  3. Photonic structuring in transparent media Physical mechanism ? Most of the experimental results were inconclusive since they were based on the post processing of the samples Photochemical process Thermal process By in-situ studying the spatiotemporal dynamics we are lead to a better understanding of the physical process. Our results clearly support a photochemical mechanism for low repetition rate laser sources! D.G. Papazoglou et al., Opt. Lett.31, 1441 (2006) , D. G. Papazoglou et al., Opt. Lett., 32, 2055 (2007), D.G. Papazoglou et al., (invited) to appear in Optical Materials Express (2011)

  4. i-HOM (In-line holographic microscopy) High resolution pump-probe experimental technique that is capable of resolving small refractive index changes (~ 10-4 ) in m sized focal volumes Spatial distribution of the perturbed refractive index and respective electron density in a central longitudinal section of a plasma string formed in air D.G. Papazoglou et al, Appl. Phys. Lett., 93, 041120 (2008)

  5. Using coma aberration to generate intense Airy beams cubic phase modulation Airy beams are a non-dispersive solution of the 1D paraxial propagation equation G. A. Siviloglou, et al., Phys. Rev. Lett., 99, 213901 (2007) Optical aberrations can be envisioned as a way to impose polynomial phase distributions on plane wave! Coma aberration  Cubic phase ! D. G. Papazoglou, et al., Phys. Rev. A, 81, 061807(R) (2010)

  6. Spatiotemporal Airy Light Bullets in the Linear and Nonlinear Regimes By combining a spatial Airy beam with an Airy pulse in time we have generated intense Airy-Airy-Airy (Airy3)light bullets The Airy3 light bullets do not require any specific tuning of the material optical properties for their formation and withstand both diffraction and dispersion during their propagation. The Airy3 light bullets are robust up to the high intensity regime since they are capable of self-healing the nonlinearly induced distortions of their spatiotemporal profile Intensity iso-surface of the experimentally realized Airy3 light bullet Spatiotemporal self healing of the Airy3 light bullet D. Abdollahpour, et. al. Phys. Rev. Lett., 105, 253901 (2010)

More Related