Τμήμα Επιστήμης & Μηχανικής Υλικών

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Optoelectronics - Research Activities

Optoelectronics

Members

D. Papazoglou,  N. Pelekanos,  P. Savvidis,  S. Tzortzakis,   G. Kioseoglou

 

Ultrafast dynamics measurements setup

Ultrafast dynamics measurements setupThe activities in this field are mainly directed towards the study and exploitation of fundamentally novel processes which could potentially allow dramatic improvement in the performance of optoelectronic devices. One such example is the phenomenon of polariton lasing or condensation which requires no population inversions in comparison to conventional semiconductor lasers exhibiting ultralow lasing thresholds. This effort has recently led to the spectacular demonstration of an electrically pumped GaAs polariton LED device which operates near room temperature, published in Nature.

The facilities at our disposal cover wide spectrum starting from sample growth by MBE techniques, processing and device fabrication in a state of the art cleanroom as well as optical and electrical characterization.

Single dot spectroscopy setup
Single dot spectroscopy setup

 

 

The main general interests include:

  • Novel optoelectronic and nanophotonic devices
  • Ultrafast non-linear interactions in semiconductor and organic microcavities
  • Room temperature polaritonics and devices
  • Physics and applications of semiconductor nanostructures
  • Laser based fabrication of integrated photonic structures
  • Nonlinear interaction of intense ultra-short laser pulses with transparent media

Current research topics:

  • Polariton based devices and applications (N. Pelekanos, P. Savvidis)
  • Nonlinear phenomena in organic microcavities and Bragg structures (P. Savvidis)
  • Strong coupling at room temperature (P. Savvidis, N. Pelekanos)
  • Hybrid organic-inorganic polariton LEDs (P. Savvidis)
  • Single photon sources based on piezoelectric quantum dots (N. Pelekanos)
  • Semiconductor nanowires: physics and applications (N. Pelekanos)
  • R&D for improved nitride-based blue/green optoelectronics (N. Pelekanos)
  • Micro/nano-structuring in the bulk of transparent media (D. Papazoglou, S. Tzortzakis)
  • Light Bullets, novel applications of non-diffracting beams (D. Papazoglou, S. Tzortzakis)
  • Plasma photonic devices (D. Papazoglou, S. Tzortzakis)
  • Strong THz fields and applications (S. Tzortzakis)
  • Nonlinear laser propagation and filamentation (S. Tzortzakis)
  • Quantum and complexity physics with photonic lattices (S. Tzortzakis)

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