Terahertz pulse propagation through small apertures

Citation
O. Mitrofanov et al., Terahertz pulse propagation through small apertures, APPL PHYS L, 79(7), 2001, pp. 907-909
Citations number
13
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
0003-6951 → ACNP
Volume
79
Issue
7
Year of publication
2001
Pages
907 - 909
Database
ISI
SICI code
0003-6951(20010813)79:7<907:TPPTSA>2.0.ZU;2-H
Abstract
Transmission of single-cycle terahertz pulses through subwavelength apertur es is experimentally studied in the near-field zone. Measurements of throug hput for aperture sizes d as small as lambda /300 show that the theoretical d(3) law requires a correction term which takes into account the physical thickness of the aperture screen. Frequency dependent transmission of the b road band pulses explains changes in their spectral and temporal characteri stics. Practical application of small apertures in near-field microscope pr obes allows achievement of spatial resolution of 7 mum for pulses with a br oad spectral content of lambda =120-1500 mum. (C) 2001 American Institute o f Physics.