Construction of sub-terahertz spectroscopic system using incoherent light source

利用非相干光源构建亚太赫兹光谱系统

• 批准号: 11450031
• 负责人: HANGYO Masanori
• 金额: $ 9.54万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450031/
• 关键词: sub-terahertz wave; incoherent light source; photoconductive switch; laser diode; time domain spectroscopy; cross-correlation; semiconductor characterization; complex refractive index; テラヘルツ電磁波; サブテラヘルツ波; 相互相関; テラヘルツ時間領域分光; マルチモードレーザーダイオード; ス; sub-terahertz wave; incoherent light source; photoconductive switch; laser diode; time domain spectroscopy; cross-correlation; semiconductor characterization; complex refractive index; テラヘルツ電磁波; サブテラヘルツ波; 相互相関; テラヘルツ時間領域分光; マルチモードレーザーダイオード; ス

The purpose of this study is to construct sub-terahertz spectroscopic system using a compact and cheap incoherent light source and to demonstrate its usefulness. First, we constructed a system composed of a continuous wave multimode laser diode (CWMLD) and a low-temperature-grown GaAs (LT-GaAs) photoconductive switch, which work as an sub-THz emitter, and a Martin-Puplett type interferometer and bolometer. The usefulness of the system was verified by measuring transmittance of doped silicon wafers. Next, we constructed new spectroscopic system consisting of a CWMLD and two photoconductive switches, which are used for an emitter and a detector. By measuring the complex refractive index of doped silicon wafers, it is proved that this cheep and compact system is equivalent with a system using an expensive ultrashort laser.

这项研究的目的是使用紧凑且廉价的不连贯的光源构建亚曲霉的光谱系统，并证明其有用性。首先，我们构建了一个由连续波多模多模激光二极管（CWMLD）和低温生长GAA（LT-GAAS）光电传输开关组成的系统，该开关可用作Sub-Thz Emitter，以及Martin-Puplett Type Interferemer和Bologe。通过测量掺杂的硅晶片的透射率来验证系统的有用性。接下来，我们构建了新的光谱系统，该系统由CWMLD和两个光电传输开关组成，这些开关用于发射器和检测器。通过测量掺杂的硅晶片的复杂折射率，证明这种Cheep和紧凑的系统与使用昂贵的超短激光器的系统相等。