dimitris papazoglou assistant professor, affiliated faculty iesl-forth senior member of the unis...
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Dimitris PapazoglouDimitris Papazoglou
Assistant Professor ,
Affiliated faculty IESL-FORTHSenior member of the UNIS group
PhD: 1998, Aristotle University of Thessaloniki, Physics
Research activity is taking place in IESL-FORTH facilities
Ultra-intense nonlinear interactions and sources (UNIS) lab
Bibliometric info: 42 publications, 304 citations, h factor: 11
General research area: Optics (experimentalist)
Nonlinear interactions of ultra-short laser pulses with transparent media
Nonlinear interactions of ultra-short laser pulses with transparent media
Exotic optical waves and light bulletsExotic optical waves and light bullets
Wavefront sensing and manipulationWavefront sensing and manipulation
Research activitiesResearch activities
Active collaborationsActive collaborations
Stelios Tzortzakis (IESL-FORTH)
Nikos Efremidis (UOC)
George Stegeman (CREOL)
Demetrios Christodoulides (CREOL)
Stelios Tzortzakis (IESL-FORTH)
Nikos Efremidis (UOC)
George Stegeman (CREOL)
Demetrios Christodoulides (CREOL)
Physical mechanism ?
Physical mechanism ?
Thermal processThermal process
Photochemical process
Photochemical process
Most of the experimental results were inconclusive
since they were based on the post
processing of the samples
Photonic structuring in transparent media Photonic structuring in transparent media
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)
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!
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!
i-HOM (In-line holographic microscopy)i-HOM (In-line holographic microscopy)
Spatial distribution of the perturbed refractive index and respective electron density in a central
longitudinal section of a plasma string formed in air
Spatial distribution of the perturbed refractive index and respective electron density in a central
longitudinal section of a plasma string formed in air
High resolution pump-probe experimental technique that is capable of resolving small refractive index changes (~ 10-4 ) in m sized focal volumes
High resolution pump-probe experimental technique that is capable of resolving small refractive index changes (~ 10-4 ) in m sized focal volumes
D.G. Papazoglou et al, Appl. Phys. Lett., 93, 041120 (2008)
Using coma aberration to generate intense Airy beamsUsing coma aberration to generate intense Airy beams
Coma aberration Cubic phase !
G. A. Siviloglou, et al., Phys. Rev. Lett., 99, 213901 (2007)
Airy beams are a non-dispersive solution of
the 1D paraxial propagation equation
Optical aberrations can be envisioned as a way to impose polynomial phase distributions on plane wave!
D. G. Papazoglou, et al., Phys. Rev. A, 81, 061807(R) (2010)
cubic phase modulation
Spatiotemporal Airy Light Bullets in the Linear and Nonlinear RegimesSpatiotemporal Airy Light Bullets in the Linear and Nonlinear Regimes
D. Abdollahpour, et. al. Phys. Rev. Lett., 105, 253901 (2010)
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
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