Approaching The Sample And Focusing The Laser Beam - NT-MDT NTEGRA Spectra Instruction Manual

9.2. Approaching the Sample and Focusing the Laser
Beam
Confocal scanning needs the sample to be at the focal plane of the lens. To place the
sample at the required position, perform the following steps:
1. Reduce intensity of the beam on exit of the spectrometer as follows:
a. Go to the
Spectra
Panel.
b. Go to the
Renishaw CCD
the tab.
Spectra
c. In the
Laser power
the spectrometer (Fig. 9-2).
Fig. 9-2. Defining the beam power level on exit of the spectrometer
2. Place the lens Z-scanner in the middle of the scan range:
a. Click the
screen.
b. Move the slider to its middle position (Fig. 9-3).
Fig. 9-3. Lens Z-scanner positioned in the middle of its range
Chapter 9. Measuring with the Confocal Microscopy Mode
tab by clicking the
tab by clicking the corresponding title at the left top of
drop-down list, select 0.5 % as the beam power level on exit of
button at the left top of the
button in the Main Operations
tab. A slider appears on the
Spectra
33