Time-Resolved Terahertz Spectroscopy with Free-Space Electro-Optic Sampling |
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作者姓名: | 张亮亮 赵国忠 钟华 胡颖 张存林 |
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作者单位: | [1]LDepartmentofPhysics,CapitalNormalUniversity,Beijing100037 [2]RensselaerPolytechnicInstitute,NewYork,USA |
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摘 要: | We present a time-resolved ultrafast measurement in terahertz (THz) frequency region by means of the free-space electro-optic sampling. The fast delay scan technique is used to suppress the noise with low frequency and to improve the signal-to-noise ratio of the system. The transmission spectra of different materials are obtained.The optical properties of these materials in a THz region are shown. The broadening of spectrum and chirping phenomena are illustrated. We find that polystyrene is an excellent material for the THz application.
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关 键 词: | 微波激光 太赫辐射 波长 电子光学取样 脉冲频率 |
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