Title :
Ultrafast observation of weak coupling effects in ZnO-Ag heterostructures
Author :
Lawrie, Benjamin ; Mu, Richard ; Haglund, Richard
Author_Institution :
Interdiscipl. Grad. Program in Mater. Sci., Vanderbilt Univ., Nashville, TN, USA
Abstract :
Transmission and reflection pump-probe-spectroscopy on ZnO/MgO heterostructures demonstrate a 600fs excitonic decay to impurity bound states located near the ZnO/MgO interface. Surface-plasmon-polaritons supported on a 30nm Ag film quench this process through weak coupling effects.
Keywords :
II-VI semiconductors; bound states; excitons; high-speed optical techniques; impurity states; metallic thin films; polaritons; radiation quenching; semiconductor-metal boundaries; silver; surface plasmons; zinc compounds; ZnO-Ag; excitonic decay; film; heterostructures; impurity bound states; quenching; reflection pump-probe-spectroscopy; surface-plasmon-polaritons; transmission pump-probe-spectroscopy; ultrafast observation; weak coupling effects; Couplings; Excitons; Films; Photoluminescence; Plasmons; Substrates; Zinc oxide;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2011 Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-4577-1223-4
