DocumentCode
152657
Title
Excitation of coherent phonons in GaAs by broadband THz pulses
Author
Zhengping Fu ; Yamaguchi, Masaki
Author_Institution
Rensselaer Polytech. Inst., Troy, NY, USA
fYear
2014
fDate
14-19 Sept. 2014
Firstpage
1
Lastpage
1
Abstract
In this paper, we present coherent excitation of optical phonons with broadband THz pulses from laser induced plasma. GaAs wafer was excited with a single and double THz pulses, and detected with optical probe. In addition to infrared active TO phonons, we have observed oscillation at the frequency of LO phonons, we identified as upper branch of phononpolaritons.
Keywords
III-V semiconductors; gallium arsenide; optical pulse generation; phonons; polaritons; GaAs; LO phonons; broadband THz pulses; coherent excitation; coherent phonons; infrared active TO phonons; laser induced plasma; optical phonons; optical probe; phonon-polaritons; Broadband communication; Gallium arsenide; Optical pulses; Optical pumping; Optical reflection; Phonons; Ultrafast optics;
fLanguage
English
Publisher
ieee
Conference_Titel
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location
Tucson, AZ
Type
conf
DOI
10.1109/IRMMW-THz.2014.6956037
Filename
6956037
Link To Document