Helicity-dependent terahertz radiation from topological insulator Sb2Te3 thin film by femtosecond optical excitation

Chien Ming Tu; Yi Cheng Chen; Ping Huang; Pei Yu Chuang; Ming Yu Lin; Chih Wei Luo; Cheng Maw Cheng; Jiunn Yuan Lin; Jung Chun Huang; Way Faung Pong; Takayoshi Kobayashi

doi:10.1109/IRMMW-THz.2016.7758886

Helicity-dependent terahertz radiation from topological insulator Sb₂Te₃ thin film by femtosecond optical excitation

Chien Ming Tu, Yi Cheng Chen, Ping Huang, Pei Yu Chuang, Ming Yu Lin, Chih Wei Luo, Cheng Maw Cheng, Jiunn Yuan Lin, Jung Chun Huang, Way Faung Pong, Takayoshi Kobayashi

研究成果: Conference contribution › 同行評審

摘要

We report on terahertz radiation from topological insulator (TI) Sb₂Te₃ thin film under ultrafast optical excitation with different helicity. Polarity-reversals of the emitted THz radiation were observed as the helicity of optical pulses reversed. The observed phenomena are coincident with the characteristics of the helicity-dependent photocurrent on TIs. Our work demonstrates the potential applications of surface photocurrents on TIs for opto-spintronics devices.

原文	English
主出版物標題	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
發行者	IEEE Computer Society
ISBN（電子）	9781467384858
DOIs	https://doi.org/10.1109/IRMMW-THz.2016.7758886
出版狀態	Published - 28 11月 2016
事件	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 - Copenhagen, Denmark 持續時間: 25 9月 2016 → 30 9月 2016

出版系列

名字	International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
卷	2016-November
ISSN（列印）	2162-2027
ISSN（電子）	2162-2035

Conference

Conference	41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
國家/地區	Denmark
城市	Copenhagen
期間	25/09/16 → 30/09/16

存取文件

10.1109/IRMMW-THz.2016.7758886

其它文件與鏈接

Link to publication in Scopus

引用此

Tu, C. M., Chen, Y. C., Huang, P., Chuang, P. Y., Lin, M. Y., Luo, C. W., Cheng, C. M., Lin, J. Y., Huang, J. C., Pong, W. F., & Kobayashi, T. (2016). Helicity-dependent terahertz radiation from topological insulator Sb₂Te₃ thin film by femtosecond optical excitation. 於 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 [7758886] (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; 卷 2016-November). IEEE Computer Society. https://doi.org/10.1109/IRMMW-THz.2016.7758886

Tu, Chien Ming ; Chen, Yi Cheng ; Huang, Ping 等. / Helicity-dependent terahertz radiation from topological insulator Sb₂Te₃ thin film by femtosecond optical excitation. 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. IEEE Computer Society, 2016. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz).

@inproceedings{346d8eb2bfcb4a47930ef8533846e8c0,

title = "Helicity-dependent terahertz radiation from topological insulator Sb2Te3 thin film by femtosecond optical excitation",

abstract = "We report on terahertz radiation from topological insulator (TI) Sb2Te3 thin film under ultrafast optical excitation with different helicity. Polarity-reversals of the emitted THz radiation were observed as the helicity of optical pulses reversed. The observed phenomena are coincident with the characteristics of the helicity-dependent photocurrent on TIs. Our work demonstrates the potential applications of surface photocurrents on TIs for opto-spintronics devices.",

author = "Tu, {Chien Ming} and Chen, {Yi Cheng} and Ping Huang and Chuang, {Pei Yu} and Lin, {Ming Yu} and Luo, {Chih Wei} and Cheng, {Cheng Maw} and Lin, {Jiunn Yuan} and Huang, {Jung Chun} and Pong, {Way Faung} and Takayoshi Kobayashi",

year = "2016",

month = nov,

day = "28",

doi = "10.1109/IRMMW-THz.2016.7758886",

language = "English",

series = "International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz",

publisher = "IEEE Computer Society",

booktitle = "41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016",

address = "United States",

note = "41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016 ; Conference date: 25-09-2016 Through 30-09-2016",

}

Tu, CM, Chen, YC, Huang, P, Chuang, PY, Lin, MY, Luo, CW, Cheng, CM, Lin, JY, Huang, JC, Pong, WF & Kobayashi, T 2016, Helicity-dependent terahertz radiation from topological insulator Sb₂Te₃ thin film by femtosecond optical excitation. 於 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016., 7758886, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, 卷 2016-November, IEEE Computer Society, 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016, Copenhagen, Denmark, 25/09/16. https://doi.org/10.1109/IRMMW-THz.2016.7758886

Helicity-dependent terahertz radiation from topological insulator Sb₂Te₃ thin film by femtosecond optical excitation. / Tu, Chien Ming; Chen, Yi Cheng; Huang, Ping 等.
41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. IEEE Computer Society, 2016. 7758886 (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz; 卷 2016-November).

研究成果: Conference contribution › 同行評審

TY - GEN

T1 - Helicity-dependent terahertz radiation from topological insulator Sb2Te3 thin film by femtosecond optical excitation

AU - Tu, Chien Ming

AU - Chen, Yi Cheng

AU - Huang, Ping

AU - Chuang, Pei Yu

AU - Lin, Ming Yu

AU - Luo, Chih Wei

AU - Cheng, Cheng Maw

AU - Lin, Jiunn Yuan

AU - Huang, Jung Chun

AU - Pong, Way Faung

AU - Kobayashi, Takayoshi

PY - 2016/11/28

Y1 - 2016/11/28

N2 - We report on terahertz radiation from topological insulator (TI) Sb2Te3 thin film under ultrafast optical excitation with different helicity. Polarity-reversals of the emitted THz radiation were observed as the helicity of optical pulses reversed. The observed phenomena are coincident with the characteristics of the helicity-dependent photocurrent on TIs. Our work demonstrates the potential applications of surface photocurrents on TIs for opto-spintronics devices.

AB - We report on terahertz radiation from topological insulator (TI) Sb2Te3 thin film under ultrafast optical excitation with different helicity. Polarity-reversals of the emitted THz radiation were observed as the helicity of optical pulses reversed. The observed phenomena are coincident with the characteristics of the helicity-dependent photocurrent on TIs. Our work demonstrates the potential applications of surface photocurrents on TIs for opto-spintronics devices.

UR - http://www.scopus.com/inward/record.url?scp=85006175074&partnerID=8YFLogxK

U2 - 10.1109/IRMMW-THz.2016.7758886

DO - 10.1109/IRMMW-THz.2016.7758886

M3 - Conference contribution

AN - SCOPUS:85006175074

T3 - International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz

BT - 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016

PB - IEEE Computer Society

T2 - 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016

Y2 - 25 September 2016 through 30 September 2016

ER -

Tu CM, Chen YC, Huang P, Chuang PY, Lin MY, Luo CW 等. Helicity-dependent terahertz radiation from topological insulator Sb₂Te₃ thin film by femtosecond optical excitation. 於 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016. IEEE Computer Society. 2016. 7758886. (International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz). doi: 10.1109/IRMMW-THz.2016.7758886