Spatial confinement of broadband terahertz (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 OSA
O. Mitrofanov, C. Renaud, and A. Seeds, "Spatial confinement of broadband THz pulses with a twin-needle probe for THz spectroscopy," in CLEO: 2013, OSA Technical Digest (online) (Optical Society of America, 2013), paper CM2J.5.
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