Resonant scattering probes for terahertz near-field microscopy

Tom Siday; Michele Natrella; Jiang Wu; Huiyun Liu; Oleg Mitrofanov

doi:10.1117/12.2290903

26 January 2018 Resonant scattering probes for terahertz near-field microscopy

Tom Siday, Michele Natrella, Jiang Wu, Huiyun Liu, Oleg Mitrofanov

Proceedings Volume 10540, Quantum Sensing and Nano Electronics and Photonics XV; 1054020 (2018) https://doi.org/10.1117/12.2290903
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

We propose and demonstrate a scattering-type near-field probe, designed to increase the sensitivity of high-resolution scattering probe microscopy at terahertz (THz) frequencies. For efficient scattering of THz radiation, the probe, fabricated from indium, is designed to resonate like a dipole antenna. Efficient excitation is achieved by integrating the probe with a radially-polarized THz source. Using time-domain spectroscopy (TDS), we observe resonant enhancement of the scattered fields, and using aperture-type near-field microscopy, we see high field confinement at the scattering probe apex.

Conference Presentation

Citation Download Citation

Tom Siday, Michele Natrella, Jiang Wu, Huiyun Liu, and Oleg Mitrofanov "Resonant scattering probes for terahertz near-field microscopy", Proc. SPIE 10540, Quantum Sensing and Nano Electronics and Photonics XV, 1054020 (26 January 2018); https://doi.org/10.1117/12.2290903

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