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MF002

MF002 - set of 10 SNOM probes, supplied without tuning forks SNOM probes with transmitted wavelength 450-600nm

Material - single mode optical fiber Nufern 460HP.
Probe tip is coated by Al (70nm)/sublayer V (20nm) .
Tip diameter uncoated by Al (tip aperture) ~ 50-100 nm
Angle of fiber - about 20 degrees
Maximum optical input power - 400 microWatt
The probes are prepared by chemical etching method.
This method gives the optical efficiency 102 - 104 times better than those obtained by mechanical pulling.

 

Geometrical & Mechanical fiber  Specifications:

Clad Diameter

125.0 ± 1.5 µm

Coating Diameter

245 ± 15 µm

Core-Clad Concentricity

< 0.5 µm

Coating/Clad Offset

≤ 5 µm

Coating Material

UV Cured, Dual Acrylate

Operating Temperature

-55 to +85 °C

Short-Term Bend Radius

≥ 6 mm

Long-Term Bend Radius

≥ 13 mm

Proof Test Level

≥ 200 kpsi (1.4 GN/m²)

SNOM probe characteristics:

Characteristics

Probe type

MF002

Basic Nufern fiber

460-HP

Operating wavelength, nm

450-600

Mode Field Diameter

3.5 ± 0.5 µm @ 515 nm

Second Mode Cut-Off, nm

430 ± 20

Optical efficiency, 100 nm aperture

4x10-4

Optical efficiency, 50 nm aperture

4x10-5

 

 

Uncoated SNOM probe tip

Probe tip with Al coating.

Aperture is about 70nm.
 
 
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