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Frontiers of Optoelectronics

Front Optoelec Chin    2011, Vol. 4 Issue (4) : 444-447     DOI: 10.1007/s12200-011-0175-4
RESEARCH ARTICLE |
Investigation of aqueous acetone solution with THz pulse spectroscopy
Jinxin BIAN, Yiming ZHU(), Xiaoxuan JIA, Lin CHEN, Yan PENG, Yongcai YANG, Songlin ZHUANG
Engineering Research Center of Optical Instrument and System, Ministry of Education, Shanghai Key Laboratory of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
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Abstract

The absorption spectra from 0.2 to 1.7 THz of five water-acetone mixtures, whose concentrations are 0%, 25%, 50%, 75%, and 100%, has been investigated by THz time-domain spectroscopy (THz-TDS). The result indicates that of acetone solutions with different concentrations have different absorption for THz radiation, which is analyzed and attributed to the variation of the hydrogen bond. Furthermore, we also find the absorption of the water-acetone mixture almost linearly increases with the increase of water concentration in the THz range.

Keywords THz time-domain spectroscopy (THz-TDS)      relative absorption coefficient      aqueous acetone solution     
Corresponding Authors: ZHU Yiming,Email:ymzhu@usst.edu.cn   
Issue Date: 05 December 2011
 Cite this article:   
Jinxin BIAN,Yiming ZHU,Xiaoxuan JIA, et al. Investigation of aqueous acetone solution with THz pulse spectroscopy[J]. Front Optoelec Chin, 2011, 4(4): 444-447.
 URL:  
http://journal.hep.com.cn/foe/EN/10.1007/s12200-011-0175-4
http://journal.hep.com.cn/foe/EN/Y2011/V4/I4/444
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Jinxin BIAN
Yiming ZHU
Xiaoxuan JIA
Lin CHEN
Yan PENG
Yongcai YANG
Songlin ZHUANG
Fig.1  Schematic diagram of THz-TDS system. M1-M7: reflecting mirrors, L1-L4: lenses, PM1-PM4: off-axis parabolic mirrors, Si: high resistant silicon wafer, EO: electro-optic crystal, HWP: half-wave plate, QWP: quarter-wave plate
Fig.2  Schematic diagram of the structure of sample boxes. (a) Reference cell with the structure of HDPE-filter paper-HDPE; (b) sample cell with the same structure ?lled with the solution of acetone
Fig.3  (a) Transmitted THz pulses of the vacant sample box and 0%, 25%, 50%, 75% and 100% acetone solution; (b) the corresponding THz spectra from the Fourier transform of time domain waves
Fig.4  Relative absorption of 0%, 25%, 50%, 75% and 100% acetone-water mixture
Fig.5  Relation between relative absorption and concentration of acetone in acetone-water mixture at 1 THz
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