Chapter 1. Basic Information
Fig. 1-3. Parts of the SNOM module
1 – replaceable panel; 2 – optical tube; 3 – positioning device;
4 – laser beam delivery system KineFlex;5 – PMT module;
6 – hollow sample holder; 7 – set of substrates; 8 – fixing screws
1.3.1. Optical Measuring Head
The optical measuring head (hereafter, measuring head) consists of the following parts:
− Optical detection system;
− Universal objective;
− Universal objective holder;
− Probe holder.
The optical cantilever deflection detection system 1 is mounted on the objective holder 2
(Fig. 1-4). The objective is suspended in an arrangement of elastically deformed arms.
This arrangement provides high accuracy of focusing and mechanical stability of the
device. The head mount 3 is equipped with microscrews for positioning the probe.
Fig. 1-4. Basic parts of the measuring head
1 – optical detection module; 2 – objective holder;
3 – base unit with the probe holder and positioning mechanisms
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