Real-time terahertz near-field microscope

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


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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Computer Systems
  • Equipment Design
  • Equipment Failure Analysis
  • Image Enhancement / instrumentation*
  • Microscopy / instrumentation*
  • Reproducibility of Results
  • Sensitivity and Specificity
  • Terahertz Imaging / instrumentation*