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CW-THz vector spectroscopy and imaging system based on 1.55-mu m fiber-optics SCIE SCOPUS

Title
CW-THz vector spectroscopy and imaging system based on 1.55-mu m fiber-optics
Authors
Kim, JYSong, HJYaita, MHirata, AAjito, K
Date Issued
2014-01-27
Publisher
OPTICAL SOC AMER
Abstract
We present a continuous-wave terahertz (THz) vector spectroscopy and imaging system based on a 1.5-mu m fiber optic unitraveling- carrier photodiode and InGaAs photo-conductive receiver. Using electro-optic (EO) phase modulators for THz phase control with shortened optical paths, the system achieves fast vector measurement with effective phase stabilization. Dynamic ranges of 100 dB.Hz and 75 degrees dB.Hz at 300 GHz and 1 THz, and phase stability of 1.5 per minute are obtained. With the simultaneous measurement of absorbance and relative permittivity, we demonstrate non-destructive analyses of pharmaceutical cocrystals inside tablets within a few minutes. (C) 2014 Optical Society of America
URI
https://oasis.postech.ac.kr/handle/2014.oak/37341
DOI
10.1364/OE.22.001735
ISSN
1094-4087
Article Type
Article
Citation
OPTICS EXPRESS, vol. 22, no. 2, page. 1735 - 1741, 2014-01-27
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송호진SONG, HO JIN
Dept of Electrical Enginrg
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