دورية
Application of emitter–sample hybrid terahertz time-domain spectroscopy to investigate temperature-dependent optical constants of doped InAs
| العنوان: | Application of emitter–sample hybrid terahertz time-domain spectroscopy to investigate temperature-dependent optical constants of doped InAs |
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| المؤلفون: | Han, J. W., Kim, M. S., Song, M. S., Kang, B. Y., Cho, B. K., Lee, J. S. |
| المصدر: | Applied Optics; March 2017, Vol. 56 Issue: 9 p2529-2534, 6p |
| مستخلص: | We investigate temperature-dependent carrier dynamics of InAs crystal by using reflection-type terahertz time-domain spectroscopy, particularly with a recently developed emitter–sample hybrid structure. We successfully obtain the optical conductivity in a terahertz frequency of bulk InAs whose dc conductivity is in the range of 100–150 Ω^−1 cm^−1. We find that both real and imaginary parts of the optical conductivity can be fit well with the simple Drude model, and the free-carrier density and the scattering rate obtained from the fit are in good agreement with corresponding values obtained by using other techniques, such as the Hall measurement and the dc-resistivity measurement. These results clearly demonstrate that the proposed technique of adopting the emitter–sample hybrid structure can be exploited to determine temperature-dependent optical constants in a reflection geometry and hence to investigate electrodynamics of bulk metallic systems. |
| قاعدة البيانات: | Supplemental Index |
| تدمد: | 1559128X 21553165 |
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