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Proceedings Paper

THz-infra-UV transmission spectra of BGO:Ca/Pb crystals
Author(s): Bihui Hou; Na Li; Wei Hao; Ya-li Wang; Bingxin Yang; Renbin Zhong
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Paper Abstract

The THz-Infra-UV transmission spectra of Bi4Ge3O12 (BGO) and BGO:Ca, BGO:Pb crystals have been measured at the room temperature. The forbidden gap Eg of electronic energy bands are about 3.66eV (339nm). The quantities of adulteration Ca2+ and Pb2+ were very little (0.02 wt %), it did not influence Eg and the breadth of phonon absorption. The high frequency edge of the phonon absorption of the crystals was at 1700cm-1 (or 51THz). The low frequency edge of the phonon absorption was at 66 cm-1 (or 1.98THz). Below 2.00THz the transmission T(1/λ) largened, maybe a nice transmission would be below 2.00THz in the three samples. The influence to the transmission from impurity Ca2+ ion was smaller than 10%, and from impurity Pb2+ion was smaller than 5%. Below 2.00THz the transmission T(1/λ) largened in the three samples.

Paper Details

Date Published: 4 November 2010
PDF: 5 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 785405 (4 November 2010); doi: 10.1117/12.869867
Show Author Affiliations
Bihui Hou, Beijing Univ. of Technology (China)
Na Li, Beijing Univ. of Technology (China)
Wei Hao, Beijing Univ. of Technology (China)
Ya-li Wang, Graduate Univ. of the Chinese Academy of Sciences (China)
Bingxin Yang, Graduate Univ. of the Chinese Academy of Sciences (China)
Renbin Zhong, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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