AFM & nano-Spectroscopy Systems

  
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MF005

MF005 - set of 10 SNOM probes, supplied without tuning forks.

 

Material - single mode optical fiber Nufern 980HP.
Probe tip is coated by Al (70nm)/sublayer V (20nm) .
Tip diameter uncoated by Al (tip aperture)
200 - 300 nm (250±50)
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

MF005

Basic Nufern Fiber

980HP

Operating wavelength, nm

980-1600

Mode Field Diameter

4.2 ± 0.5 µm @ 980 nm
6.8 ± 0.5 µm @ 1550 nm

Second Mode Cut-Off, nm

920 ± 30

Optical efficiency for wavelength 530 nm

~1%

Optical efficiency for working wavelength

~ (10-5 - 10-4)

 

 

 

SNOM probe's end

Probe tip with Al coating.

Aperture is 200 - 300 nm (250±50).

 

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