NTEGRA Spectra Probe NanoLaboratory. SNOM Measuring Head. Instruction Manual
Fig. 1-11. Optical tube
Diagram of the optical tube is shown in Fig. 1-12. For measurements, the sample surface
is located in the focal plane of the lens 1. The reflecting prism 2 redirects the laser beam
to the objective for delivering radiation to the tube or to the laser beam delivery system
for collecting the transmitted radiation.
Fig. 1-12. Diagram of the optical tube
1 – lens; 2 – reflecting prism
Positioning device
The positioning device (Fig. 1-13) is a mount of the optical tube. It can move the tube in
three coordinates to position the tube so that the sample surface is in the focus of the lens.
Fig. 1-13. positioning device
1 – X movement screw; 2 – Y movement screw;
3 – Z movement screw; 4 – supporting bracket
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