Title :
All-optical generation and detection of coherent acoustic phonons in GaN single crystals
Author :
Wu, Shuai ; Geiser, P. ; Jun, J. ; Karpinski, J. ; Sobolewski, Roman
Author_Institution :
Department of Physics and Astronomy and the Laboratory for Laser Energetics, University of Rochester, NY 14627, USA
Abstract :
We report experimental and theoretical studies on time-resolved generation and detection of coherent acoustic phonons in bulk GaN single crystals with an ultrafast two-color pump-probe technique. Optically-induced electronic stress is responsible for the phonon generation.
Keywords :
Acoustic signal detection; Gallium nitride; Optical films; Optical modulation; Optical pulse generation; Optical pumping; Optical refraction; Phonons; Photonic band gap; Probes;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2007. QELS '07
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/QELS.2007.4431102
