Stampa

780-970nm

Punte per SNOM che trasmettono le lunghezze d'onda 780-970nm, fibra di base Nufern 780-HP, diametro della fibra 125 um, lunghezza della fibra 2m, apertura inferiore a 100nm.

 

Material - single mode optical fiber Nufern 780HP.
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

MF004

Basic Nufern fiber

780-HP

Operating wavelength, nm

780-970

Mode Field Diameter

5.0 ± 0.5 µm @ 850 nm

Second Mode Cut-Off, nm

730 ± 30

Optical efficiency, 100 nm aperture

4x10-5

Optical efficiency, 50 nm aperture

4x10-6

 

 

 

 

Uncoated SNOM probe tip

Probe tip with Al coating.

Aperture is about 70nm.