| Original Articles |
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Time-Resolved Terahertz Spectroscopy with Free-Space Electro-Optic Sampling |
| ZHANG Liang-Liang1;ZHAO Guo-Zhong1;ZHONG Hua2;HU Ying1;ZHANG Cun-Lin1 |
| 1Department of Physics, Capital Normal University, Beijing 100037
2Rensselaer Polytechnic Institute, New York, USA |
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| Cite this article: |
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ZHANG Liang-Liang, ZHAO Guo-Zhong, ZHONG Hua et al 2004 Chin. Phys. Lett. 21 2295-2297 |
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Abstract 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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| Keywords:
78.47.+p
07.57.Ty
42.62.Eh
78.20.Ci
78.30.Ly
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Published: 01 November 2004
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| PACS: |
78.47.+p
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07.57.Ty
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(Infrared spectrometers, auxiliary equipment, and techniques)
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42.62.Eh
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(Metrological applications; optical frequency synthesizers for precision spectroscopy)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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78.30.Ly
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(Disordered solids)
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