DataVXAdvanced Optical MaterialsPaper
journal article·2013-11Open access

Terahertz Generation: THz Generation and Detection on Dirac Fermions in Topological Insulators (Advanced Optical Materials 11/2013)

Chih Wei Luo, Hsueh‐Ju Chen, Chien Ming Tu, Chia Ching Lee, Shin An Ku, Wen Yen Tzeng, Tien Tien Yeh, Meng Chi Chiang, Harn Jiunn Wang, Wei Chen Chu, Jiunn‐Yuan Lin, Kaung Hsiung Wu, Jenh Yih Juang, Takayoshi Kobayashi, Cheng‐Maw Cheng, Ching‐Hung Chen, Ku‐Ding Tsuei, Helmuth Berger, Raman Sankar, Fang Cheng Chou, Hung Duen Yang

Advanced Optical Materials· Volume 1· Issue 11
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Source abstract

Abstract

THz radiation is generated from topological insulators by C. W. Luo, J.-Y. Lin, and co-workers using an 800 nm femtosecond laser. Two-channel free carrier absorption with bulk and surface carriers is indispensable to explaining the strong dependence of THz emission power on the carrier concentration. The surface carriers in topological insulators are significantly better absorbers of THz radiation than bulk carriers at room temperature. Moreover, the characteristics of THz emission provide valuable information on page 804 regarding the fundamental properties of Dirac fermions.
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Research context

OpenAlex topics: Topological Materials and Phenomena

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Affiliations

Department of Electrophysics National Chiao Tung University Hsinchu 300 Taiwan R.O.C

Institute of Physics National Chiao Tung University Hsinchu 300 Taiwan R.O.C

Advanced Ultrafast Laser Research Center University of Electro‐Communications 1–5–1 Chofugaoka Chofu Tokyo 182–8585 Japan

Department of Engineering Science, Faculty of Informatics and Engineering University of Electro‐Communications 1–5–1 Chofugaoka Chofu Tokyo 182–8585 Japan

National Synchrotron Radiation Research Center Hsinchu 30076 Taiwan R.O.C

Institute of Physics of Complex Matter, EPFL 1015 Lausanne Switzerland

Center for Condensed Matter Sciences National Taiwan University Taipei 106 Taiwan R.O.C

Department of Physics National Sun Yat‐sen University Kaohsiung 804 Taiwan R.O.C

References

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