@inproceedings{4ff05ca915bc4662b819fc613f9ae4a9,
title = "Experimental study of terahertz emission from ZnSe and ZnTe nano structures",
abstract = "Terahertz (THz) emission from ZnSe and ZnTe nano dots and nano gratings is experimentally studied compared with that from <111> orientation bulk ZnSe and <110> orientation bulk ZnTe. These nano dots and nano gratings are fabricated by the femtosecond laser ablation technique. Three main mechanisms coexist in the THz radiation from ZnSe and ZnTe surface nano structures as the same as from bulk sample: current surge effect (drift current), Photo Dember effect (diffusion current), and optical rectification. Moreover, it is found that nano structures not only contribute to an enhancement of THz emission, but also increase the threshold of polarity reversal of THz wave, and widen the spectrum of THz radiation. We also observe a two-fold symmetry in rotating pump polarization angle from ZnTe nano gratings, which is completely different from the three-fold symmetry observed from bulk ZnTe.",
keywords = "Enhancement THz radiation, Surface nano dots, Surface nano gratings, ZnSe, ZnTe",
author = "Xiaoshu Chen and Shan He and Wu, \{Xiao Jun\} and Zhao, \{Fu Li\} and Gang Wang and Reng Wang and Weizheng Fang and Shuhong Hu and Ning Dai",
year = "2008",
doi = "10.1117/12.758532",
language = "英语",
isbn = "9780819470157",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Terahertz Photonics",
note = "Terahertz Photonics ; Conference date: 12-11-2007 Through 14-11-2007",
}