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Spatial confinement of broadband THz pulses with a twin-needle probe for THz spectroscopy

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Abstract

Spatial confinement of broadband THz pulses to a 10 micrometer spot is achieved using a twin-needle probe. Combined with a THz subwavelength aperture near-field probe, it enables broadband THz spectroscopy of single micrometer-size objects.

© 2013 Optical Society of America

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