Keysight 5500, User Manual, Page: 88 / 330

Preparing for Imaging
5
Keysight 5500 SPM User’s Guide 5-14
Aligning the Laser
The next step is to ensure that the scanner laser spot is aligned to reflect
off of the cantilever. Several methods can be used to do so.
In most cases, particularly with highly reflective samples, you can use
the 5500 SPM video system to focus on the cantilever and align the laser
spot (
Figure 4-15 ). If the sample is not reflective, use a piece of gold
film on mica or other reflective sample.
The laser spot will be visible in the video image until it crosses the
cantilever, so you can use a similar procedure to the paper method
below. See
“Using the Video System ” later in this chapter.
Figure 4-15 Using video system to align laser
Figure 4-16 shows how the position of the laser with respect to the
cantilever affects the position of the laser reflection relative to the