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.
SNOM
Coating interfaces
Refractive index
Corrugated metal
resolution
Aperture diameter
Hydrofluoric acid
High energy
Ge-doped silica
Silica
Skin depth
Metal coatings
Technical notes
Protective coatings
Bragg gratings
Fiber optic networks
Metals
Etch rates
Multi-step
Diffraction orders
aperture metal-coated probes
HF acid
Probes
Germanium
Bragg grating
Phase masks
Evanescent fields
High energy physics
Transparent optical networks
Doping (additives)
corrugated tapered probes
Glass fibers
Author
P. Wróbel
University of Warsaw
T. Stefaniuk
University of Warsaw
Tomasz Antosiewicz
Chalmers, Applied Physics, Condensed Matter Theory
A. Libura
Polish Academy of Sciences
G. Nowak
Polish Academy of Sciences
T. Wejrzanowski
Warsaw University of Technology
Mariusz Andrzejczuk
Warsaw University of Technology
K. Jedrzejewski
Warsaw University of Technology
T. Szoplik
University of Warsaw
13th International Conference on Transparent Optical Networks, ICTON 2011, Stockholm, 26-30 June 2011
2162-7339 (eISSN)
978-145770880-0 (ISBN)
Subject Categories
Other Engineering and Technologies
DOI
10.1109/ICTON.2011.5971074
ISBN
978-145770880-0