Terahertz BWO-spectrosopy
Terahertz BWO-spectrosopy
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DOI：
10.1007/s10762-005-7600-y
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发表时间：
2005-09-01
期刊：
影响因子：
--
通讯作者：
Loidl, A
中科院分区：
文献类型：
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作者：
Gorshunov, B;Volkov, A;Loidl, A
现代太赫兹-亚太赫兹（THz-subTHz）光谱仪，基于连续频率可调谐相干辐射源，返波振荡器（BWO），其覆盖频率v = 1 cm（-1）- 50 cm（-1）（0.03 - 1.5 THz），并允许在2 - 1000 K的温度下进行测量，也在磁场中。它们允许在毫米-亚毫米波长下直接测定材料的任何光学参数的光谱，这是红外或微波光谱仪遇到严重方法困难的领域。我们报告的准光学BWO光谱仪的新技术能力，并讨论其主要组成部分。我们展示了太赫兹-亚太赫兹BWO光谱的能力，通过介绍一些最新的结果测量介电，导电，超导和磁性材料。
Modern Terahertz-subTerahertz (THz-subTHz) spectrometers, based on continuously frequency-tunable coherent sources of radiation, the backward-wave oscillators (BWOs), are described which cover the frequencies v = 1 cm(-1) - 50 cm(-1) (0.03 - 1.5 THz) and allow for measurements at temperatures 2 - 1000 K, also in magnetic fields. They allow for direct determination of spectra of any optical parameter of a material at millimeter-submillimeter wavelengths, the domain where infrared or microwave spectrometers encounter serious methodological difficulties. We report on new technical abilities of the quasioptical BWO-spectrometers and discuss their main components. We demonstrate abilities of the THz-subTHz BWO-spectroscopy by presenting some latest results on measurements of dielectric, conducting, superconducting and magnetic materials.