Helicity-dependent terahertz radiation from topological insulator Sb2Te3 thin film by femtosecond optical excitation
(2016) 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016- 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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3701d0b9-3ab9-44dc-b375-9f7a387a2a27
- author
- organization
- publishing date
- 2016-11-28
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
- article number
- 7758886
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016
- conference location
- Copenhagen, Denmark
- conference dates
- 2016-09-25 - 2016-09-30
- external identifiers
-
- scopus:85006175074
- ISBN
- 9781467384858
- DOI
- 10.1109/IRMMW-THz.2016.7758886
- language
- English
- LU publication?
- yes
- id
- 3701d0b9-3ab9-44dc-b375-9f7a387a2a27
- date added to LUP
- 2016-12-30 08:54:31
- date last changed
- 2022-01-30 08:54:04
@inproceedings{3701d0b9-3ab9-44dc-b375-9f7a387a2a27, abstract = {{<p>We report on terahertz radiation from topological insulator (TI) Sb<sub>2</sub>Te<sub>3</sub> 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.</p>}}, author = {{Tu, Chien Ming and Chen, Yi Cheng and Huang, Ping 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 Kobayashi, Takayoshi}}, booktitle = {{41st International Conference on Infrared, Millimeter and Terahertz Waves, IRMMW-THz 2016}}, isbn = {{9781467384858}}, language = {{eng}}, month = {{11}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Helicity-dependent terahertz radiation from topological insulator Sb<sub>2</sub>Te<sub>3</sub> thin film by femtosecond optical excitation}}, url = {{http://dx.doi.org/10.1109/IRMMW-THz.2016.7758886}}, doi = {{10.1109/IRMMW-THz.2016.7758886}}, year = {{2016}}, }