Terahertz phase microscopy in the sub-wavelength regime

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Abstract

Gouy phase shift is a well-known behavior that occurs when a propagating light is focused, but its behavior in the sub-wavelength confinement is not yet known. Here, we report the theoretical and experimental study of the aperture-size dependency of the Gouy phase shift in the sub-wavelength diffraction regime. In experiments carried out with laser-induced terahertz (THz) wave emission from various semiconductor apertures, we demonstrate the use of Guoy phase shit for sub-wavelength THz microscopy. © 2012 American Institute of Physics.

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Yi, M., Lee, K., Song, J. D., & Ahn, J. (2012). Terahertz phase microscopy in the sub-wavelength regime. Applied Physics Letters, 100(16). https://doi.org/10.1063/1.4705294

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