This title appears in the Scientific Report :
2005
Please use the identifier:
http://hdl.handle.net/2128/2114 in citations.
Please use the identifier: http://dx.doi.org/10.1063/1.1978972 in citations.
A Novel Metal-Dielectric Antenna for Terahertz Near-Field Imaging
A Novel Metal-Dielectric Antenna for Terahertz Near-Field Imaging
We present an antenna-based approach to near-field imaging and spectroscopy, which can be used for both continuous-wave and pulsed broadband electromagnetic radiations from microwave to terahertz frequencies. Our near-field antenna consists. of a rectangular-shaped block of low-loss dielectric mater...
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Personal Name(s): | Klein, N. |
---|---|
Lahl, P. / Poppe, U. / Kadlec, F. / Kuzel, P. | |
Contributing Institute: |
Institut für Bio- und Chemosensoren; ISG-2 Center of Nanoelectronic Systems for Information Technology; CNI |
Published in: | Journal of applied physics, 98 (2005) S. 14910 |
Imprint: |
Melville, NY
American Institute of Physics
2005
|
Physical Description: |
14910 |
DOI: |
10.1063/1.1978972 |
Document Type: |
Journal Article |
Research Program: |
Materialien, Prozesse und Bauelemente für die Mikro- und Nanoelektronik |
Series Title: |
Journal of Applied Physics
98 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1063/1.1978972 in citations.
We present an antenna-based approach to near-field imaging and spectroscopy, which can be used for both continuous-wave and pulsed broadband electromagnetic radiations from microwave to terahertz frequencies. Our near-field antenna consists. of a rectangular-shaped block of low-loss dielectric material sharpened to a pyramidal tip which is partially metallized and terminated by a micron-sized plane facet. At this facet the entire energy of the incident wave is concentrated as a very high but strongly localized electric held, which can be used as a sensitive near-field microprobe for electromagnetic radiation. Currently, experiments in reflection geometry with pulsed terahertz radiation and continuous-wave radiation near 80 GHz reveal a frequency-independent spatial resolution of about 20 Am corresponding to lambda/200 at 80 GHz, which is only limited by the size of the facet terminating the tip. (c) 2005 American Institute of Physics. |