Demonstration and utilization of high temperature coherent terahertz emitter

高温相干太赫兹发射器演示与应用

• 批准号: 23681030
• 负责人: KAKEYA Itsuhiro
• 金额: $ 17.8万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (A)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23681030/
• 关键词: 固有ジョセフソン接合; テラヘルツ発振; Bi2212; 同期現象; ジョセフソン効果; テラヘルツ光源; Ｂｉ２２１２; メサ構造

The properties of terahertz emitter made of high-temperature superconductor (HTSC) have been revealed in this project. We have also been successful in designing the properties of the device for the first time. Terahertz waves laying between radio waves and light waves show peculiar features of rather high transmittance and high spacial resolution and its technology has been investigated intensively. This study reveals that the terahertz wave from an HTSC emitter is highly coherent, so that the HTSC emitter can be utilized for a source of carrier wave for next-generation high-speed communication infrastructures. It is also found that the emission frequency of a device is externally tunable. The poor reproduciblity of devices mentioned in previous studies has been improved.

该项目揭示了由高温超导体（HTSC）制成的太赫兹发射器的特性。我们还首次成功设计了该设备的特性。太赫兹波介于无线电波和光波之间，具有较高的透过率和较高的空间分辨率，其技术已得到深入研究。这项研究表明，HTSC 发射器发出的太赫兹波具有高度相干性，因此 HTSC 发射器可用作下一代高速通信基础设施的载波源。还发现设备的发射频率是外部可调的。之前研究中提到的设备重复性差的问题已经得到改善。

项目成果

Doping Evolution of Normal State Transport Properties in BiPb2201 Cleaved Thin Crystals

BiPb2201 劈裂薄晶体中正常态传输特性的掺杂演化

• 发表时间: 2011
• 作者: I.Kakeya;K.Sumida;S.Shinada;Y.Takamaru;Minoru Suzuki;K.Suga;K.Kindo
• 通讯作者: K.Kindo

Doping evolution of the sign reversal in Hall resistivity of (Bi, Pb)_2(Sr, La)_2CuO_<6+d> thin crystals

(Bi, Pb)_2(Sr, La)_2CuO_<6 d> 薄晶体霍尔电阻率符号反转的掺杂演化

• 发表时间: 2011
• 作者: I.Kakeya;K.Sumida;S.Shinada;Y.Takamaru;M.Suzuki
• 通讯作者: M.Suzuki

Effect of thermal inhomogeneity for terahertz-wave excitation in intrinsic Josephson junction stack

本征约瑟夫森结叠堆中太赫兹波激发的热不均匀性效应

• 发表时间: 2012
• 作者: Itsuhiro Kakeya;Yuta Omukai;and Minoru Suzuki
• 通讯作者: and Minoru Suzuki

高温超伝導体Bi2Sr2CaCu2O8+δ固有ジョセフソン接合からのテラヘルツ発振の温度範囲における電極厚依存性

高温超导体Bi2Sr2CaCu2O8+δ本征约瑟夫森结在温度范围内太赫兹振荡的电极厚度依赖性

• 作者: 中川拓人，平山伸夫，水田慎吾，亀井裕太，前田圭穂，吉岡佑介，掛谷一弘，鈴木実

Temperature and current dependencies of terahertz emission from stacks of intrinsic Josephson junctions with thin electrodes revealed by a high-resolution FT-IR spectrometer

高分辨率 FT-IR 光谱仪揭示了具有薄电极的本征约瑟夫森结堆叠的太赫兹发射的温度和电流依赖性

• DOI: 10.1016/j.physc.2012.12.014
• 发表时间: 2013
• 期刊: Physica C
• 影响因子: 1.7
• 作者: Itsuhiro Kakeya;Nobuo Hirayama;Takuto Nakagawa;Yuta Omukai;and Minoru Suzuki,
• 通讯作者: and Minoru Suzuki,