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Transmission of THz pulses through 3μm apertures: applications for near-field microscopy

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Abstract

We demonstrate that THz pulses transmitted through small apertures (~λ/100) exhibit strong evanescent components within 1µm of the aperture. Using this effect, we developed sub-wavelength aperture THz near-field probes that provide 3μm resolution.

© 2014 Optical Society of America

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