THORLABS OCT-LK Series, Руководство пользователя

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OCTP Series Scanner Chapter 5: Description
Rev F, November 03, 2018 Page 27
Reference Arm Tweaks
 There is an optimal intensity for the reference light that can be found using the zero-aperture iris. For
the best contrast, the intensity in the reference arm should be roughly equal to the intensity of the
backscattered and back-reflected light returning from the sample.
 The length of the reference arm can be adjusted by translating the retroreflector along the cage rods,
by rotating the variable lens tube (a coarse adjustment), or by using the non-rotating zoom housing (a
fine adjustment). Adjustment of the reference arm length can be done in combination with adjustment
of the focus height (using the OCT-STAND), so that the focal point in the OCT data is shifted. This
adjustment is also necessary when imaging in a refractive medium.
 Filters and dispersion-compensating optics can be mounted in the reference arm.
In the dual path configuration of the OCTP-NR, the reference path components are not included.
Figure 33 Optical Layout OCTP-NR
Optional Optical Ports
In the two figures above, optional optical ports are marked.
 A non-descanned optical port (i.e., a port that bypasses the partially transmitting galvo scan mirrors) is
accessible by removing the camera.