Enhancement of microcavity polariton relaxation under confinement (2009)
Paraïso, Taofiq, Sarchi, Davide, Nardin, Gaël, Cerna, Roland, Leger, Yoan, Pietka, Barbara, ...
We experimentally investigate the relaxation of spatially confined microcavity polaritons. We measure the time- and energy-resolved photoluminescence under resonant excitation and in the low-density...
Nardin, Gaël, Paraïso, Taofiq, Cerna, Roland, Pietka, Barbara, Léger, Yoan, El Daif, Ounsi, ...
We present the optical tomography of the probability density of quasiparticles, the microcavity polaritons, confined in three dimensions by cylindrical traps. Collecting the photoluminescence emitted...
Ultrafast time-domain spectroscopy based on high-speed asynchronous optical sampling (2007)
Bartels, Albrecht, Cerna, Roland, Kistner, Caroline, Thoma, Arne, Hudert, Florian, Janke, Christof, ...
High-speed asynchronous optical sampling (ASOPS) is a novel technique for ultrafast time-domain spectroscopy (TDS). It employs two mode-locked femtosecond oscillators operating at a fixed repetition...
A surface phase transition of supported gold nanoparticles (2007)
Plech, Anton, Cerna, Roland, Kotaidis, Vassilios, Hudert, Florian, Bartels, Albrecht, Dekorsy, Thomas
A thermal phase transition has been resolved in gold nanoparticles supported on a surface. By use of asynchronous optical sampling with coupled femtosecond oscillators, the Lamb vibrational modes...
High-speed asynchronous optical sampling for high-sensitivity detection of coherent phonons (2007)
Dekorsy, Thomas, Taubert, Richard, Hudert, Florian, Schrenk, Gerhard, Bartels, Albrecht, Cerna, Roland, ...
A new optical pump-probe technique is implemented for the investigation of coherent acoustic phonon dynamics in the GHz to THz frequency range which is based on two asynchronously linked femtosecond...
Coherent acoustic phonons in nanostructures investigated by asynchronous optical sampling (2006)
Dekorsy, Thomas, Hudert, Florian, Cerna, Roland, Schaefer, Hanjo, Janke, Christof, Bartels, Albrecht, ...
A new optical pump-probe technique is implemented for the investigation of acoustic phonon dynamics in the GHz to THz frequency range which is based on two asynchronously linked femtosecond lasers....