Title :
Near-field antennas integrated with scanning probes for THz to visible microscopy: scale modeling and limitations on performance
Author :
Rosner, Björn ; Peck, John ; Van der Weide, Daniel
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
fDate :
5/1/2002 12:00:00 AM
Abstract :
A promising approach to localized spectroscopy at far-infrared (λ > 5 μm) and terahertz frequencies (100-3000 GHz) is with scanning probe microscopes by transducing far-field radiation to the near field with a field confinement structure - a near-field antenna. We discuss the background of this idea and show encouraging results from a scale-model experiment using 3-GHz microwave radiation. We also present experiments to scale antennas to visible wavelengths and we discuss limits to scale modeling
Keywords :
antenna radiation patterns; microwave antennas; millimetre wave antennas; scanning probe microscopy; spectroscopy; transducers; 100 to 3000 GHz; SHF; SPM cantilevers; bowtie-patterned metallization; far-field radiation; far-field to near-field transducer; far-infrared; field confinement structure; localized spectroscopy; microwave radiation; millimeter-wave antennas; near field; near-field antennas; planar antennas; scale modeling; scale-model experiment; scanning probe microscopes; silicon-oxy-nitride cantilever; terahertz frequencies; visible microscopy; visible wavelengths; Aperture antennas; Biomedical optical imaging; Finite impulse response filter; Optical feedback; Optical microscopy; Optical scattering; Scanning probe microscopy; Spatial resolution; Spectroscopy; Ultrafast optics;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.1011233
