Search Results - "Matsukawa, Takeshi"
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Diffraction-limited real-time terahertz imaging by optical frequency up-conversion in a DAST crystal
Published in Optics express (23-03-2015)“…Real-time terahertz (THz) wave imaging has wide applications in areas such as security, industry, biology, medicine, pharmacy, and the arts. This report…”
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Evaluation of hydrogen-bonding distance in organic nonlinear optical crystals for high-output terahertz-wave generation
Published in Journal of molecular structure (15-04-2017)“…The crystal structure of deuterated 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST-d26) was obtained by powder X-ray and neutron diffraction…”
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Z-MEM, Maximum Entropy Method software for electron/nuclear density distribution in Z-Code
Published in Physica. B, Condensed matter (15-12-2018)“…Maximum Entropy Method (MEM) is one of powerful tools for material science. We developed the program Z-MEM for evaluation of electron and nuclear density…”
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Real-time terahertz wave imaging by nonlinear optical frequency up-conversion in a 4-dimethylamino- N′ -methyl-4′-stilbazolium tosylate crystal
Published in Applied physics letters (10-03-2014)“…Real-time terahertz (THz) wave imaging has wide applications in areas such as security, industry, biology, medicine, pharmacy, and arts. In this letter, we…”
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Bridging a few terahertz to tens of terahertz: Inspection on a cost-effective, room-temperature operated measurement system based on frequency conversion via 4-dimethylamino-N′-methyl-4′-stilbazolium tosylate crystal
Published in Applied physics letters (20-01-2014)“…Based on experimental studies, we inspected the feasibility of a frequency conversion system, including both terahertz (THz) generation and detection, by using…”
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Terahertz-wave generation from 4-dimethylamino-N′-methyl-4′-stilbazolium p-bromobenzenesulfonate crystal: Effect of halogen substitution in a counter benzenesulfonate of stilbazolium derivatives
Published in Optical materials (01-10-2014)“…•We have developed a technique to grow DASB with a bromine substituent in the anion.•The high transmission was attributed to the weak interaction between…”
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Journal Article Conference Proceeding -
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Neutron Diffraction Studies on Valence Ordering Compound YbPd
Published in Journal of the Physical Society of Japan (15-11-2018)Get full text
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Pump-beam-induced optical damage depended on repetition frequency and pulse width in 4-dimethylamino- N ′-methyl-4 ′ -stilbazolium tosylate crystal
Published in Applied physics letters (08-07-2013)“…We investigated the dependence of optical damage to an organic nonlinear optical crystal of 4-dimethylamino-N′-methyl-4′-stilbazolium tosylate (DAST) on the…”
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Competition between magnetic interactions and structural instabilities leading to itinerant frustration in the triangular lattice antiferromagnet LiCrSe2
Published in Communications materials (07-10-2023)“…LiCrSe 2 constitutes a recent valuable addition to the ensemble of two-dimensional triangular lattice antiferromagnets. In this work, we present a…”
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Temperature Dependence of Crystal Structure and THz Absorption Spectra of Organic Nonlinear Optical Stilbazolium Material for High-Output THz-Wave Generation
Published in Journal of infrared, millimeter and terahertz waves (01-06-2016)“…A stilbazolium material comprising 4-dimethylamino- N ′-methyl-4′-stilbazolium tosylate (DAST), which has a large nonlinear optical susceptibility, was studied…”
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Growth of thin rubrene single crystals from 1-propanol solvent
Published in Journal of crystal growth (2010)“…Rubrene (5,6,11,12-tetraphenyltetracene) single crystals were grown by using the solution-slow-cooling technique with 1-propanol (PrOH) solvent. Thin hexagonal…”
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Electric-field-induced orientation control of organic semiconductor rubrene crystals
Published in Materials chemistry and physics (15-01-2013)“…The electric field-induced orientation of rubrene single crystals was observed in a nonpolar solvent. Rubrene single microcrystals responded to an AC electric…”
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Bulk Crystal Growth of Stilbazolium Derivatives for Terahertz Waves Generation
Published in Japanese Journal of Applied Physics (01-07-2010)“…The two stilbazolium derivatives, 4-dimethylamino- N -methyl-4-stilbazolium tosylate (DAST) and 4-dimethylamino- N -methyl-4-stilbazolium p…”
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Polymorphs of Rubrene Crystal Grown from Solution
Published in Japanese Journal of Applied Physics (01-08-2010)“…Single crystals of rubrene were grown by slow cooling of solutions in various solvents. Hexagonal single crystals were obtained from p -xylene, whereas…”
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Synthesis and terahertz-wave generation of mixed crystals composed of 1-methyl-4-{2-[4-(dimethylamino)phenyl]ethenyl}pyridinium p-toluenesulfonate and p-chlorobenzenesulfonate
Published in Journal of crystal growth (01-02-2007)“…1-Methyl-4-{2-[4-(dimethylamino)phenyl]ethenyl}pyridinium p-toluenesulfonate and p-chlorobenezenesulfonate (DAST and DASC) have excellent second-order…”
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Solution growth of high-quality organic N-benzyl-2-methyl-4-nitroaniline crystal for ultra-wideband tunable DFG-THz source
Published in Optical materials express (01-02-2012)“…We firstly obtained organic N-benzyl-2-methyl-4-nitroaniline (BNA) single crystals using solution growth method. The crystal quality obtained by solution…”
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Solution Growth of Rubrene Single Crystals Using Various Organic Solvents
Published in Japanese Journal of Applied Physics (01-12-2008)Get full text
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Terahertz Generation and Optical Properties of Lithium Ternary Chalcogenide Crystals
Published in Journal of infrared, millimeter and terahertz waves (01-04-2011)“…We have investigated the generation of THz radiation in lithium ternary compounds LiInSe 2 , LiGaSe 2 , LiInS 2 , LiGaS 2 and characterized these materials by…”
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Photoelectrode characteristics of an organic bilayer in water phase containing a redox molecule
Published in Journal of solid state electrochemistry (01-02-2007)Get full text
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