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Opt Express. 2011 Apr 25;19(9):8277-84. doi: 10.1364/OE.19.008277.

Real-time terahertz near-field microscope.

Author information

1
Institute for Integrated Cell-Material Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan. blanchard@icems.kyoto-u.ac.jp

Abstract

We report a terahertz near-field microscope with a high dynamic range that can capture images of a 370 x 740 μm2 area at 35 frames per second. We achieve high spatial resolution (14 μm corresponding to λ/30 for a center frequency at 0.7 THz) on a large area by combining two novel techniques: terahertz generation by tilted-pulse-front excitation and electro-optic balanced imaging detection using a thin crystal. To demonstrate the microscope capability, we reveal the field enhancement at the gap position of a dipole antenna after the irradiation of a terahertz pulse.

PMID:
21643077
DOI:
10.1364/OE.19.008277
[Indexed for MEDLINE]

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