Design concept of THz near-field microscopy based on an air-plasma dynamic aperture. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Design concept of THz near-field microscopy based on an air-plasma dynamic aperture.

Caption

Schematic of THz near-field microscopy based on an air-plasma dynamic aperture. Two femtosecond laser pulses were focused in mutually perpendicular directions to generate two air-plasmas (Plasma1 and Plasma2) close to the sample surface. The incident THz beam was modulated by the cross-filament created by the air-plasmas and the reflected THz near-field signal was measured. The inset shows the relationships between the two air-plasmas, the THz beam, and the sample.

Credit

by Xin-ke Wang, Jia-sheng Ye, Wen-feng Sun, Peng Han, Lei Hou, and Yan Zhang

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Credit must be given to the creator.

License

CC BY

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