Open AccessStudy of differently doped Zn0.95Cd0.05Te〈110〉single crystals as THz emitters
Author(s) -
Xiumin Wang,
Xiping Xu,
Yuping Yang,
Yulei Shi,
Fuli Li,
Wang Li,
X C Zhang,
Kang Hyun-Shik,
Kim Tae-kyu
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.1003
Subject(s) - terahertz radiation , materials science , doping , electrical resistivity and conductivity , common emitter , dispersion (optics) , absorption (acoustics) , optoelectronics , terahertz spectroscopy and technology , spectroscopy , condensed matter physics , optics , physics , quantum mechanics , composite material
Properties of differently doped Zn0.95Cd0.05Te〈110〉 crystals as terahertz (THz) wave emitter are studied using THz time-domain spectroscopy. It is observed that the THz generation efficiency increases as the DC resistivity increases when the resistivity of crystals is greater than 102 Ω·cm, but the efficiency saturates and even declines when the resistivity goes beyond 106 Ω·cm. It is revealed that the dispersion properties of crystals play an important role, besides the doping-dependent absorption in THz region.