Variable Anamorphic Prism Pair Manual - Toptica

Variable Anamorphic Prism Pair Manual 5. Alignment
2. Choose an appropriate angular orientation of prism 1.
For an estimate Figure 2 shows the theoretical dependence of overall anamorphic magnification
and orientation of prism 1 for a wavelength range of 390 - 1500 nm.
NOTE ! The values given in Figure 2 are calculated for ideal prisms and a wavelength range of
390 - 1500 nm. Different wavelengths lead to slightly different dependences and production
tolerances can lead to deviations.
Figure 2 Angle and Magnification values of ideal prism for wavelength range between 390 nm and
1500 nm.
2.1 Make sure the beam enters the entrance aperture centered.
2.2 Loosen Screw 1 (see Figure 3) and carefully loosen Screws 2 and 3 until Prism 1 can be
rotated with a small force.
2.3 Choose the desired magnification and determine the orientation of Prism 1 e.g. by the help
of Figure 2.
2.3 Fasten Screw 1.
3. Rotate Prism 2 until the exiting beam propagates parallel to the incoming beam.
As an estimate Figure 2 shows calculated angular orientations of Prism 2 as a function of the orientation
of Prism 1 for a wavelength range of 390 - 1500 nm.
3.1 Loosen Screw 4 until Prism 2 can be shifted and rotated.
3.2 Shift Prism 2 into the middle of the range of possible positions.
3.3 Rotate Prism 2 until the exiting beam hits mark B (cf. step 1.3).
Page 6
Status: 25.5.10