TY - GEN
T1 - Handheld terahertz spectrometer for the detection of liquid explosives
AU - Krumbholz, N.
AU - Jansen, C.
AU - Scheller, M.
AU - Müller-Wirts, T.
AU - Lübbecke, S.
AU - Holzwarth, R.
AU - Scheunemann, R.
AU - Wilk, R.
AU - Sartorius, B.
AU - Roehle, H.
AU - Stanze, D.
AU - Beckmann, J.
AU - Von Chrzanowski, L. S.
AU - Ewert, U.
AU - Koch, M.
PY - 2009
Y1 - 2009
N2 - We present a handheld fiber-coupled terahertz spectrometer operating at a center wavelength of 1550 nm. The key elements are a fs-fiber laser, a fiber stretcher delay line and fiber-coupled antennas, which contain novel InAlAs-InGaAs multi layer chips. First experimental data obtained with this system demonstrates its great potential and robustness. In addition, we investigate different hazardous and harmless liquids in reflection geometry. These experiments show that liquids are in principle distinguishable by terahertz spectroscopy. Finally, first steps towards an algorithm that allows for an extraction of the liquids dielectric properties are discussed. The algorithm works for the analysis of reflection data even if the liquid is located inside a containner.
AB - We present a handheld fiber-coupled terahertz spectrometer operating at a center wavelength of 1550 nm. The key elements are a fs-fiber laser, a fiber stretcher delay line and fiber-coupled antennas, which contain novel InAlAs-InGaAs multi layer chips. First experimental data obtained with this system demonstrates its great potential and robustness. In addition, we investigate different hazardous and harmless liquids in reflection geometry. These experiments show that liquids are in principle distinguishable by terahertz spectroscopy. Finally, first steps towards an algorithm that allows for an extraction of the liquids dielectric properties are discussed. The algorithm works for the analysis of reflection data even if the liquid is located inside a containner.
UR - http://www.scopus.com/inward/record.url?scp=70450209136&partnerID=8YFLogxK
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U2 - 10.1117/12.830381
DO - 10.1117/12.830381
M3 - Conference contribution
AN - SCOPUS:70450209136
SN - 9780819477910
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Millimetre Wave and Terahertz Sensors and Technology II
T2 - Millimetre Wave and Terahertz Sensors and Technology II
Y2 - 1 September 2009 through 3 September 2009
ER -