Time-Resolved Terahertz Spectroscopy with Free-Space Electro-Optic Sampling

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2004,（11）
• 页码范围: 2295-2297
• 页数: 3页
• 语种: 英文

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.