Title :
Piezoelectricity induced terahertz photon absorption by confined acoustic phonons in wurtzite CdSe nanocrystals
Author :
Liu, Tzu-Ming ; Yang, Meng-Ju ; Lai, Chih-Wei ; Chou, Pi-Tai ; Chang, Ming-Hao ; Liu, Hsiang-Lin ; Sun, Chi-Kuang
Author_Institution :
Grad. Inst. of Photonics & Optoelectron., Nat. Taiwan Univ., Taipei
Abstract :
We observed the first piezoelectricity induced terahertz (THz) photon absorption related to the confined acoustic phonons in nanoparticles. It provides a new mechanism for THz photon-phonon conversion in low dimensional systems.
Keywords :
II-VI semiconductors; acousto-optical effects; cadmium compounds; nanoparticles; phonons; piezo-optical effects; piezoelectric semiconductors; piezoelectricity; submillimetre wave spectra; CdSe; THz photon-phonon conversion; confined acoustic phonons; low dimensional system; piezoelectricity; semiconductor nanoparticles; terahertz photon absorption; wurtzite cadmium selenide nanocrystals; Electromagnetic wave absorption; Frequency; Infrared spectra; Nanocrystals; Nanoparticles; Phonons; Photonics; Piezoelectricity; Size measurement; Spectroscopy; 260.3090 Infrared, far; 300.1030 Absorption; 300.6270 Spectroscopy, far infrared;
Conference_Titel :
Lasers and Electro-Optics, 2008 and 2008 Conference on Quantum Electronics and Laser Science. CLEO/QELS 2008. Conference on
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-55752-859-9
