Study of single-cycle pulse propagation inside a terahertz near-field probe
- 4 January 2001
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 78 (2) , 252-254
- https://doi.org/10.1063/1.1338962
Abstract
Propagation of 0.5 THz single cycle pulses inside an aperture-type near-field probe is studied. The E-field amplitude attenuation is experimentally measured at various distances from the aperture. Numerical simulations based on a two-dimensional model illustrate the pulse waveform transformation and the spectral blueshift, which is experimentally observed. The study shows that the sensitivity of such a near-field probe can be improved by more than a factor of 10 by decreasing the aperture-to-detector separation without reduction of the spatial resolution.Keywords
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