Optical characterization

The laboratory is focused on the characterization of electron processes using optical methods. The basic characterization include absorption and fluorescence spectra, as well as the determination of quantum yields and fluorescence lifetimes of excited states. The laboratory also studies the charge and energy transfer in systems for organic electronics (solar cells, electroluminescence diodes) and biological materials (DNA). Attention is also focused on research of materials for use in nonlinear optics (e.g. two-photon absorption) and for the construction of organic solid-state lasers (e.g. amplified spontaneous emission).

Contact: Martin Vala, PhD.

Key instruments

In addition to standard equipment for the characterization of absorption and fluorescence spectra, anisotropy, quantum yields and lifetimes of excited states, we have also a modular equipment, which can be configured according to the requirements of a particular experiment. This allows us to carry out special experiments which are not possible or too costly with commercial facilities. There is also the possibility to measure samples in the vacuum, in an inert atmosphere and at low temperatures (77K).

  • Absorption and fluorescence spectrophotometers
  • Pulsed picosecond Nd:YAG laser with 2nd, 3rd and 4th harmonics
  • Tunable pulsed picosecond optical parametric generator (available soon)
  • Intensified CCD camera for spectroscopy (gated from 2ns) with spectrograph
  • Photomultiplier tubes for UV, VIS and NIR
  • Monochromators, continual and pulsed light sources, energy meters and other equipment