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 :
Univ. of Rochester, Rochester
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 :
III-V semiconductors; gallium compounds; phonons; time resolved spectra; GaN; coherent acoustic phonons; optically-induced electronic stress; phonon generation; time-resolved generation; ultrafast two-color pump-probe technique; Acoustic signal detection; Gallium nitride; Optical films; Optical modulation; Optical pulse generation; Optical pumping; Optical refraction; Phonons; Photonic band gap; Probes;
Conference_Titel :
Lasers and Electro-Optics, 2007. CLEO 2007. Conference on
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-55752-834-6
DOI :
10.1109/CLEO.2007.4453325
