High-Quality Organic 4-Dimethylamino-N-methyl-4-stilbazolium Tosylate (DAST) Crystals for THz Wave Generation
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概要
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Using the Slope Nucleation Method (SNM) and highly purified materials along with an optimized growth program, we produced high-quality organic 4-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) crystals. The growth method greatly improved crystallinity. The difference frequency mixing, based on the KTiOPO4 (KTP)-optical parametric oscillator (OPO), generated a coherent, tunable, THz wave in the range of 2 to 30 THz using DAST crystals. These superior DAST crystals also extended the THz generation time. We achieved a constant THz energy output for over 10 h, whereas conventional DAST crystals had reduced the THz wave output in less than 1 hour. We anticipate increased use of DAST crystals for THz generation because of superior performance.
- 2004-08-15
著者
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Brahadeeswaran Srinivasan
Department Of Engineering Osaka University
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Nakanishi Hachiro
Institute For Chemical Reaction Science Tohoku University
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Yoshimura Masashi
Department Of Applied Biological Chemistry The University Of Tokyo
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Taniuchi Tetsuo
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Higo Teruaki
Department Of Engineering Osaka University
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Mori Yusuke
Department Of Applied Chemistry School Of Science And Engineering Waseda University
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Adachi Hiroaki
Department Of Biological Science Faculty Of Science Hiroshima University
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Takagi Masayuki
Department Of Diagnostic Pathology St Marianna University School Of Medicine
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Sasaki Takatomo
Department Of Electrical Electronic And Information Engineering Osaka University
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Nakanishi Hachiro
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aobaku, Sendai 980-8577, Japan
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Mori Yusuke
Department of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Adachi Hiroaki
Department of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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Brahadeeswaran Srinivasan
Department of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
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TANIUCHI Tetsuo
Institute for Materials Research, Tohoku University
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Taniuchi Tetsuo
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aobaku, Sendai 980-8577, Japan
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