NTEGRA Spectra Probe NanoLaboratory. SNOM Measuring Head. Instruction Manual
Aligning the probe aperture with the focus of the laser beam
1. Turn the turret to the position M2 (no reflection applied). The laser beam will not
illuminate the sample and the image of the sample on the monitor of the optical
viewing system will be formed by ambient light.
2. Carefully move the probe to the viewing field of the objective with the screws 1, 2
(Fig. 4-12). Watch the probe on the monitor of the optical viewing system.
Fig. 4-12. Adjusting elements
1, 2 – screws for X and Y movements of the probe
3 – screw for fine focusing; 4, 5 – screws for positioning the photodiode
3. If the probe aperture is out of the objective focus, focus the objective on the aperture
by turning the fine focusing screw 3 until the aperture image is contrast.
4. Carefully move the probe to match the aperture image on the monitor of the optical
viewing system with the second mark (Fig. 4-13).
Fig. 4-13. Probe aperture image matches the second mark
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