Title :
Coherent acoustic phonons in semiconductor Bragg mirrors
Author :
Schattiger, F. ; Ristow, O. ; Hettich, M. ; Dekorsy, T.
Author_Institution :
Dept. of Phys., Univ. of Konstanz, Konstanz, Germany
Abstract :
We report on the investigation of coherent acoustic phonons in semiconductor Bragg mirrors by means of femtosecond pump-probe spectroscopy. The observed acoustic mode spectrum is based on the phonon dispersion relation of the material, which is backfolded into the mini-Brillouin zone of the periodic structure. We show that the structural parameters can be determined by an all optical method with high accuracy.
Keywords :
Brillouin zones; high-speed optical techniques; laser mirrors; light coherence; phonon dispersion relations; acoustic mode spectrum; coherent acoustic phonons; femtosecond pump-probe spectroscopy; miniBrillouin zone; optical method; periodic structure; phonon dispersion relation; semiconductor Bragg mirrors; structural parameters; Acoustics; Dispersion; High-speed optical techniques; Mirrors; Optical pumping; Phonons; Ultrafast optics;
Conference_Titel :
Lasers and Electro-Optics Europe (CLEO EUROPE/IQEC), 2013 Conference on and International Quantum Electronics Conference
Conference_Location :
Munich
Print_ISBN :
978-1-4799-0593-5
DOI :
10.1109/CLEOE-IQEC.2013.6800935
