Preparation of high energy throughput SNOM probes
Paper in proceeding, 2011
In this technical note we present technological steps of fabrication of high energy throughput SNOM probes. The core-metal coating interface of probes is corrugated what enhances photon-to-plasmon coupling. A strong evanescent field allows for reduction of aperture diameter, which together with skin depth of metal used for coating decide upon resolution. Probes are made of Ge-doped silica glass fibre, which is hydrogenated to increase its photosensitivity. A Bragg grating is recorded in the cores with UV light diffracted into +1 st/1st diffraction orders on a sinusoidal phase mask. Modulation of the refractive index is connected with different etch rates. Etching with the Turner method is made in aqueous solution of HF acid. A corrugated tapered fibre is then coated with aluminium in a special rotating holder. We present results of this novel multi step technology.
resolution
Metals
Hydrofluoric acid
SNOM
Bragg grating
aperture metal-coated probes
Glass fibers
High energy physics
Doping (additives)
Phase masks
High energy
Bragg gratings
Evanescent fields
Technical notes
Aperture diameter
Ge-doped silica
Metal coatings
Protective coatings
corrugated tapered probes
Corrugated metal
Coating interfaces
Refractive index
Etch rates
Transparent optical networks
Silica
Germanium
Multi-step
Skin depth
HF acid
Probes
Fiber optic networks
Diffraction orders
Author
P. Wróbel
Uniwersytet Warszawski
T. Stefaniuk
Uniwersytet Warszawski
Tomasz Antosiewicz
Chalmers, Applied Physics, Condensed Matter Theory
A. Libura
High Pressure Research Center of the Polish Academy of Sciences
G. Nowak
High Pressure Research Center of the Polish Academy of Sciences
T. Wejrzanowski
Politechnika Warszawska
Mariusz Andrzejczuk
Politechnika Warszawska
K. Jedrzejewski
Politechnika Warszawska
T. Szoplik
Uniwersytet Warszawski
13th International Conference on Transparent Optical Networks, ICTON 2011, Stockholm, 26-30 June 2011
2162-7339 (eISSN)
978-145770880-0 (ISBN)
Subject Categories (SSIF 2011)
Other Engineering and Technologies
DOI
10.1109/ICTON.2011.5971074
ISBN
978-145770880-0