Near-field microscope probe for far infrared time domain measurements

Document Type

Article

Publication Date

7-24-2000

Abstract

A near-field probe fabrication technique for far-infrared frequencies based on photoconducting antennas is developed. A subwavelength-size field source is accomplished by means of an aperture and protruding high refractive index tip. The near-field probe is tested by using free space traveling electromagnetic pulses with a broadband spectrum in the range of 0.3-1.5 THz. A spatial resolution of 60 μm is achieved for a 50 μm aperture. The described probe may be used for near-field transmission microscopy in illumination and collection modes. Resolution may be further improved by means of a smaller aperture. © 2000 American Institute of Physics. [S0003-6951(00)04630-1].

Identifier

0001493379 (Scopus)

Publication Title

Applied Physics Letters

External Full Text Location

https://doi.org/10.1063/1.127054

ISSN

00036951

First Page

591

Last Page

593

Issue

4

Volume

77

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