Schematic Diagram of the Polarization Tunable THz Emission From Bi2Te3 (IMAGE)

SPIE--International Society for Optics and Photonics

Schematic Diagram of the Polarization Tunable THz Emission From Bi2Te3

Caption

Schematic diagram of the polarization tunable THz emission from Bi2Te3. (a) Femtosecond laser pulses with horizontal linearly polarized (HLP), vertical linearly polarized (VLP), left-handed circularly polarized (LCP), and right-handed circularly polarized (RCP) illuminate onto the topological insulator Bi2Te3 and produce polarization tunable THz waves. (b) Macroscopic helicity-dependent photocurrents and only unidirectional spin current can be generated. (c) Microscopic electronic transition under circularly polarized laser pulse illumination. Haihui Zhao et al., doi 10.1117/1.AP.2.6.066003

Credit

Haihui Zhao et al., doi 10.1117/1.AP.2.6.066003

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