The Experts below are selected from a list of 249 Experts worldwide ranked by ideXlab platform
K.-e. Peiponen - One of the best experts on this subject based on the ideXlab platform.
-
Maximum Entropy Method for Misplacement Phase Error Correction in Terahertz Time-Domain Reflection Spectroscopy
Springer Series in Chemical Physics, 2005Co-Authors: Y. Ino, Erik M. Vartiainen, Ryo Shimano, Makoto Kuwata-gonokami, Yuri Svirko, K.-e. PeiponenAbstract:We develop a numerical method for the misplacement phase error correction in terahertz time-domain Reflection Spectroscopy. The method is based on the maximum entropy algorithm, dramatically which simplifies the experimental procedure.
-
Numerical phase correction method for terahertz time-domain Reflection Spectroscopy
Journal of Applied Physics, 2004Co-Authors: Erik M. Vartiainen, Y. Ino, Ryo Shimano, Makoto Kuwata-gonokami, Yuri Svirko, K.-e. PeiponenAbstract:We propose a numerical method for the misplacement phase error correction in terahertz time-domain Reflection Spectroscopy (THz-TDRS). The developed algorithm is based on the maximum entropy principle and can be readily implemented into data processing, allowing one to reveal material parameters of the opaque materials from the THz Reflection measurements. The method resolves the phase retrieval problem in the THz-TDRS and dramatically simplifies the experimental procedure.
Koichiro Tanaka - One of the best experts on this subject based on the ideXlab platform.
-
Terahertz Attenuated Total Internal Reflection Spectroscopy for Water and Water Solution
Optical Terahertz Science and Technology, 2007Co-Authors: Koichiro TanakaAbstract:We demonstrate time-domain attenuated total Reflection Spectroscopy in terahertz frequency region to obtain accurate optical constants of water and water solutions. This technique will open new aspects in the research of biological systems in water.
-
Hydration number of biomolecules evaluated with THz time-domain attenuated total Reflection Spectroscopy
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006Co-Authors: Takashi Arikawa, Masaya Nagai, Koichiro TanakaAbstract:We performed THz time-domain attenuated total Reflection Spectroscopy of arginine and sucrose solution, and verified that this method gives us reasonable hydration numbers.
-
Terahertz time-domain attenuated total Reflection Spectroscopy in water and biological solution
International Journal of Infrared and Millimeter Waves, 2006Co-Authors: Masaya Nagai, Hiroyuki Yada, Takashi Arikawa, Koichiro TanakaAbstract:We demonstrate time-domain attenuated total Reflection Spectroscopy in terahertz frequency region. Geometry of the Reflection measurement is well optimized to obtain accurate optical constants of water or aqueous biomolecular system. We determine the dielectric constants of distilled water and sucrose solutions with this technique. This technique will open new aspects in the research field of biological systems in water.
-
attenuated total Reflection Spectroscopy in time domain using terahertz coherent pulses
Japanese Journal of Applied Physics, 2004Co-Authors: Hideki Hirori, Masaya Nagai, Kumiko Yamashita, Koichiro TanakaAbstract:We present a novel technique for time-domain attenuated total Reflection Spectroscopy in the terahertz (THz) frequency region. The advantage of this technique is that it can be used to access samples with various shapes and optical properties without changing the optical setup. The technique is applied to determine the complex dielectric constants in InAs and distilled liquid water.
Donghai Han - One of the best experts on this subject based on the ideXlab platform.
-
Terahertz time-domain attenuated total Reflection Spectroscopy applied to the rapid discrimination of the botanical origin of honeys
Spectrochimica acta. Part A Molecular and biomolecular spectroscopy, 2018Co-Authors: Wen Liu, Yuying Zhang, Si Yang, Donghai HanAbstract:A new technique to identify the floral resources of honeys is demanded. Terahertz time-domain attenuated total Reflection Spectroscopy combined with chemometrics methods was applied to discriminate different categorizes (Medlar honey, Vitex honey, and Acacia honey). Principal component analysis (PCA), cluster analysis (CA) and partial least squares-discriminant analysis (PLS-DA) have been used to find information of the botanical origins of honeys. Spectral range also was discussed to increase the precision of PLS-DA model. The accuracy of 88.46% for validation set was obtained, using PLS-DA model in 0.5-1.5THz. This work indicated terahertz time-domain attenuated total Reflection Spectroscopy was an available approach to evaluate the quality of honey rapidly.
Masanori Hangyo - One of the best experts on this subject based on the ideXlab platform.
-
measurement of optical properties of highly doped silicon by terahertz time domain Reflection Spectroscopy
Applied Physics Letters, 2001Co-Authors: Shigeki Nashima, Osamu Morikawa, Kazue Takata, Masanori HangyoAbstract:Optical properties of doped silicon wafers have been measured by means of terahertz time domain Reflection Spectroscopy. A method is proposed to obtain the relative phase by Reflection accurately. By using this method, the relative phase is obtained within an error of less than 10 mrad at 1 THz. The experimentally obtained complex conductivity of relatively high-doped silicon (ρ=0.136 Ω cm) in the terahertz region agrees with the simple Drude model.
Erik M. Vartiainen - One of the best experts on this subject based on the ideXlab platform.
-
Maximum Entropy Method for Misplacement Phase Error Correction in Terahertz Time-Domain Reflection Spectroscopy
Springer Series in Chemical Physics, 2005Co-Authors: Y. Ino, Erik M. Vartiainen, Ryo Shimano, Makoto Kuwata-gonokami, Yuri Svirko, K.-e. PeiponenAbstract:We develop a numerical method for the misplacement phase error correction in terahertz time-domain Reflection Spectroscopy. The method is based on the maximum entropy algorithm, dramatically which simplifies the experimental procedure.
-
Numerical phase correction method for terahertz time-domain Reflection Spectroscopy
Journal of Applied Physics, 2004Co-Authors: Erik M. Vartiainen, Y. Ino, Ryo Shimano, Makoto Kuwata-gonokami, Yuri Svirko, K.-e. PeiponenAbstract:We propose a numerical method for the misplacement phase error correction in terahertz time-domain Reflection Spectroscopy (THz-TDRS). The developed algorithm is based on the maximum entropy principle and can be readily implemented into data processing, allowing one to reveal material parameters of the opaque materials from the THz Reflection measurements. The method resolves the phase retrieval problem in the THz-TDRS and dramatically simplifies the experimental procedure.