Open AccessMillimeter wave absorption by confined acoustic modes in CdSe/CdTe core-shell quantum dots
Author(s) -
Tzu-Ming Liu,
Ja Yu Lu,
Chung Chiu Kuo,
Yu-Chieh Wen,
ChihWei Lai,
Meng Ju Yang,
PiTai Chou,
D. B. Murray,
Lucien Saviot,
ChiKuang Sun
Publication year - 2007
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/92/1/012039
Subject(s) - quantum dot , core (optical fiber) , cadmium telluride photovoltaics , absorption (acoustics) , millimeter , materials science , shell (structure) , photon , optoelectronics , phonon , extremely high frequency , optics , physics , condensed matter physics , composite material
International audienceTaking advantage of the specific core-shell charge separation structure in the CdSe/CdTe core-shell Type-II quantum dots (QDs), we experimentally observed the resonant-enhanced dipolar interaction between millimeter-wave (MMW) photons and their corresponding (l = 1) confined acoustic phonons. With proper choice of size, the absorption band can be tuned to desired frequency of MMW imaging. Exploiting this characteristic absorption, in a fiber-scanned MMW imaging system, we demonstrated the feasibility of CdSe/CdTe QDs as the contrast agents of MMW imaging