Development of terahertz-wave synthesizer using nonlinear-optical effect

利用非线性光学效应开发太赫兹波合成器

• 批准号: 17206008
• 负责人: TANIUCHI Tetsuo
• 金额: $ 31.03万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17206008/
• 关键词: terahertz wave; nonlinear optics; organic crystal

A coherent tunable terahertz (THz) source is a key device for applications such as THz frequency-domain spectroscopy and THz imaging. The purpose of this research project is to develop a THz-wave synthesizer based on difference-frequency generation (DFG) using nonlinear optical crystals. The n-conjugated organic crystals such as 4'-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST) are promising materials for wideband THz-wave generation using DFG We synthesized a new organic crystal of 4'-dimethylamino-N- methyl-4-stilbazolium p-chlorobenzenesulfonate (DASC), which possessed p-chlorobenzenesulfonate instead of the tosylate of DAST. DASC crystals can be grown using a slow-cooling method in methanol solution, the same as DAST.Widely tunable THz waves ranging from 2 to 30 THz were generated from DAST and DASC crystals using a dual-wavelength optical parametric oscillator (OPO) with two KTiOPO_4 crystals as the input light source. The OPO has a tunable range from 1340 to 1550 rim and is pumped by a frequency-doubled (532 rim), Q-switched Nd:YAG laser with a pulse duration of 12 ns. The THz output energy exceeding 500 nJ was obtained with a 0.5-mm-thick DAST and DASC crystal. Sub-THz waves in the range of 0.3-2 THz were also generated using an improved dual-wavelength OPO near 990 run with 2-mm-thick DAST crystals. The widely tunable -THz-wave synthesizer could potentially be used for real-time THz-imaging, THz-ranging, and spectroscopic applications.

相干可调谐太赫兹源是太赫兹频域光谱和太赫兹成像等应用的关键器件。本研究项目的目的是研制一种基于非线性光学晶体差频产生的太赫兹波合成器。4‘-二甲氨基-N-甲基-4-二苯乙烯(DAST)等N-共轭有机晶体是利用DFG产生THz波的理想材料。我们合成了一种新的有机晶体4’-二甲氨基-N-甲基-4-二苯乙烯对氯苯磺酸盐(DASC)。与DAST一样，DASC晶体也可以在甲醇溶液中缓慢冷却生长。利用双波长光学参量振荡器(OPO)以两个KTiOPO4晶体作为输入光源，从DAST和DASC晶体中产生了2~30 THz的宽可调THz波。该光学振荡器的调谐范围为1340~1550 rim，由脉冲宽度为12 ns的倍频(532 Rim)调Q的Nd：YAG激光器泵浦。用0.5 mm厚的DAST和DASC晶体获得了超过500nJ的THz输出能量。用2 mm厚的DAST晶体制作了990 nm附近的改进型双波长OPO，产生了0.3-2THz范围内的亚太赫兹波。这种可广泛调谐的太赫兹波合成器可能被用于实时太赫兹成像、太赫兹测距和光谱应用。

项目成果

Terahertz properties of a new organic crystal, 4'' -dimethylamino-N-methy1-4 Stibazolium p-chlorobenzenesulfonate

新型有机晶体4-二甲氨基-N-甲基1-4锑唑鎓对氯苯磺酸盐的太赫兹特性

• 发表时间: 2005
• 期刊: Jpn. J. Appl. Phys. 44-29
• 作者: 松下裕秀;野呂篤史;谷内 哲夫;Y. Mineno;T. Matsukawa;谷内 哲夫;T. Taniuchi;T. Matsukawa;T. Taniuchi;T. Matsukawa;Takeshi Matsukawa;Y. Takahashi;谷内 哲夫;岡田 修司;T. Taniuchi;S. Okada;T. Taniuchi;Yoshinori Takahashi;Shuji Okada;谷内 哲夫;岡田 修司;Yoshinori Takahashi;T. Taniuchi;Y. Mineno;T. Taniuchi;T. Taniuchi;Z. Glavcheva;Y. Mineno;T. Taniuchi
• 通讯作者: T. Taniuchi

Syntesis and properties of 1-methy1-4-{2-[4-(Dimethylamino) phenyl]ethenyl}pyridiniump-toluenesulfonate derivatives with isomorphous crystal structure

同晶结构1-甲基1-4-{2-[4-(二甲氨基)苯基]乙烯基}吡啶鎓对甲苯磺酸衍生物的合成及性能

• 发表时间: 2005
• 期刊: Jpn. J. Appl. Phys. 44-7A
• 作者: 松下裕秀;野呂篤史;谷内 哲夫;Y. Mineno;T. Matsukawa;谷内 哲夫;T. Taniuchi;T. Matsukawa;T. Taniuchi;T. Matsukawa;Takeshi Matsukawa;Y. Takahashi;谷内 哲夫;岡田 修司;T. Taniuchi;S. Okada;T. Taniuchi;Yoshinori Takahashi;Shuji Okada;谷内 哲夫;岡田 修司;Yoshinori Takahashi;T. Taniuchi;Y. Mineno;T. Taniuchi;T. Taniuchi;Z. Glavcheva;Y. Mineno;T. Taniuchi;T. Taniuchi;Z. Glavcheva
• 通讯作者: Z. Glavcheva

有機DAST結晶を用いた波長可変テラヘルツ波発生とその応用

使用有机DAST晶体产生可调谐太赫兹波及其应用

• 发表时间: 2007
• 期刊: 電子情報通信学会 信学技報 OME-142
• 作者: 松下裕秀;野呂篤史;谷内 哲夫;Y. Mineno;T. Matsukawa;谷内 哲夫
• 通讯作者: 谷内 哲夫

有機結晶からの未踏光の発生

从有机晶体中产生未探索的光

• 发表时间: 2006
• 期刊: 光アライアンス 17
• 作者: 松下裕秀;野呂篤史;谷内 哲夫;Y. Mineno;T. Matsukawa;谷内 哲夫;T. Taniuchi;T. Matsukawa;T. Taniuchi;T. Matsukawa;Takeshi Matsukawa;Y. Takahashi;谷内 哲夫;岡田 修司
• 通讯作者: 岡田 修司

Crystal growth of DAST and its derivative for THz-wave gen eration

用于产生太赫兹波的 DAST 及其衍生物的晶体生长

• 发表时间: 2005
• 期刊: Nonlinear Optics, Quantum Optics 34
• 作者: 松下裕秀;野呂篤史;谷内 哲夫;Y. Mineno;T. Matsukawa;谷内 哲夫;T. Taniuchi;T. Matsukawa;T. Taniuchi;T. Matsukawa;Takeshi Matsukawa;Y. Takahashi;谷内 哲夫;岡田 修司;T. Taniuchi;S. Okada;T. Taniuchi;Yoshinori Takahashi;Shuji Okada;谷内 哲夫;岡田 修司;Yoshinori Takahashi;T. Taniuchi;Y. Mineno
• 通讯作者: Y. Mineno