Title :
Probing multiple excitons in CdSe nanoparticles by terahertz time-domain spectroscopy
Author :
Lan, Song ; Dakovski, Georgi L. ; Chen, Xin ; Mathur, Harsh ; Shan, Jie
Author_Institution :
Dept. of Phys., Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
We measure the polarizability of electron-hole pairs quantum-confined in CdSe nanoparticles of 2-7 nm in diameter by the optical-pump/THz probe technique. The observed many-body effects are compared to self-consistent theoretical calculations.
Keywords :
II-VI semiconductors; SCF calculations; biexcitons; cadmium compounds; electron pairs; nanoparticles; optical pumping; polarisability; submillimetre wave spectra; 2 to 7 nm; CdSe; CdSe nanoparticles; THz probe technique; electron-hole pairs; many-body effects; optical-pump; polarizability; probing multiple excitons; quantum-confinement; self-consistent theoretical calculations; terahertz time-domain spectroscopy; Biomedical optical imaging; Excitons; Nanoparticles; Optical pulse generation; Optical pumping; Optical sensors; Probes; Spectroscopy; Time domain analysis; Ultrafast optics;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1548812
